CERTIFICATIONS PURSUANT TO SECTION 302
EX-99.CERT

                                 CERTIFICATIONS

I, R. Jay Gerken, certify that:

1.       I have reviewed this report on Form N-CSR of The Travelers Series Trust
         - Travelers Quality Bond Portfolio;

2.       Based on my knowledge, this report does not contain any untrue
         statement of a material fact or omit to state a material fact necessary
         to make the statements made, in light of the circumstances under which
         such statements were made, not misleading with respect to the period
         covered by this report;

3.       Based on my knowledge, the financial statements, and other financial
         information included in this report, fairly present in all material
         respects the financial condition, results of operations, changes in net
         assets, and cash flows (if the financial statements are required to
         include a statement of cash flows) of the registrant as of, and for,
         the periods presented in this report;

4.       The registrant's other certifying officers and I are responsible for
         establishing and maintaining disclosure controls and procedures (as
         defined in Rule 30a-3(c) under the Investment Company Act of 1940) for
         the registrant and have:

         a)       Designed such disclosure controls and procedures, or caused
                  such disclosure controls and procedures to be designed under
                  our supervision, to ensure that material information relating
                  to the registrant, including its consolidated subsidiaries, is
                  made known to us by others within those entities, particularly
                  during the period in which this report is being prepared;

         b)       Evaluated the effectiveness of the registrant's disclosure
                  controls and procedures and presented in this report our
                  conclusions about the effectiveness of the disclosure controls
                  and procedures, as of a date within 90 days prior to the
                  filing date of this report based on such evaluation; and

         c)       Disclosed in this report any change in the registrant's
                  internal control over financial reporting that occurred during
                  the registrant's most recent fiscal half-year (the
                  registrant's second fiscal half-year in the case of an annual
                  report) that has materially affected, or is reasonably likely
                  to materially affect, the registrant's internal control over
                  financial reporting; and

5.       The registrant's other certifying officers and I have disclosed to the
         registrant's auditors and the audit committee of the registrant's board
         of directors (or persons performing the equivalent functions):

         a)       All significant deficiencies and material weaknesses in the
                  design or operation of internal control over financial
                  reporting which are reasonably likely to adversely affect the
                  registrant's ability to record, process, summarize, and report
                  financial data; and

         b)       Any fraud, whether or not material, that involves management
                  or other employees who have a significant role in the
                  registrant's internal control over financial reporting.

Date: September 9, 2004                           /s/ R. Jay Gerken
                                             -------------------------------
                                                  R. Jay Gerken
                                                  Chief Executive Officer



I, Andrew B. Shoup, certify that:

1.       I have reviewed this report on Form N-CSR of The Travelers Series Trust
         - Travelers Quality Bond Portfolio;

2.       Based on my knowledge, this report does not contain any untrue
         statement of a material fact or omit to state a material fact necessary
         to make the statements made, in light of the circumstances under which
         such statements were made, not misleading with respect to the period
         covered by this report;

3.       Based on my knowledge, the financial information included in this
         report, and the financial statements on which the financial information
         is based, fairly present in all material respects the financial
         condition, results of operations, changes in net assets, and cash flows
         (if the financial statements are required to include a statement of
         cash flows) of the registrant as of, and for, the periods presented in
         this report;

4.       The registrant's other certifying officers and I are responsible for
         establishing and maintaining disclosure controls and procedures (as
         defined in rule 30a-3(c) under the Investment Company Act) for the
         registrant and have:

         a)       Designed such disclosure controls and procedures, or caused
                  such disclosure controls and procedures to be designed under
                  our supervision, to ensure that material information relating
                  to the registrant, including its consolidated subsidiaries, is
                  made known to us by others within those entities, particularly
                  during the period in which this report is being prepared;

         b)       Evaluated the effectiveness of the registrant's disclosure
                  controls and procedures and presented in this report our
                  conclusions about the effectiveness of the disclosure controls
                  and procedures, as of a date within 90 days prior to the
                  filing date of this report based on such evaluation; and

         c)       Disclosed in this report any change in the registrant's
                  internal control over financial reporting that occurred during
                  the registrant's most recent fiscal half-year (the
                  registrant's second fiscal half-year in the case of an annual
                  report) that has materially affected, or is reasonably likely
                  to materially affect, the registrant's internal control over
                  financial reporting; and

5.       The registrant's other certifying officers and I have disclosed to the
         registrant's auditors and the audit committee of the registrant's board
         of directors (or persons performing the equivalent functions):

         a)       All significant deficiencies and material weaknesses in the
                  design or operation of internal control over financial
                  reporting which are reasonably likely to adversely affect the
                  registrant's ability to record, process, summarize, and report
                  financial data; and

         b)       Any fraud, whether or not material, that involves management
                  or other employees who have a significant role in the
                  registrant's internal control over financial reporting.

Date: September 9, 2004                        /s/ Andrew B. Shoup
                                         -------------------------------------
                                               Andrew B. Shoup
                                               Chief Administrative Officer



CERTIFICATIONS PURSUANT TO SECTION 302
EX-99.CERT

                                 CERTIFICATIONS

I, R. Jay Gerken, certify that:

1.       I have reviewed this report on Form N-CSR of The Travelers Series Trust
         - Lazard International Stock Portfolio;

2.       Based on my knowledge, this report does not contain any untrue
         statement of a material fact or omit to state a material fact necessary
         to make the statements made, in light of the circumstances under which
         such statements were made, not misleading with respect to the period
         covered by this report;

3.       Based on my knowledge, the financial statements, and other financial
         information included in this report, fairly present in all material
         respects the financial condition, results of operations, changes in net
         assets, and cash flows (if the financial statements are required to
         include a statement of cash flows) of the registrant as of, and for,
         the periods presented in this report;

4.       The registrant's other certifying officers and I are responsible for
         establishing and maintaining disclosure controls and procedures (as
         defined in Rule 30a-3(c) under the Investment Company Act of 1940) for
         the registrant and have:

         a)       Designed such disclosure controls and procedures, or caused
                  such disclosure controls and procedures to be designed under
                  our supervision, to ensure that material information relating
                  to the registrant, including its consolidated subsidiaries, is
                  made known to us by others within those entities, particularly
                  during the period in which this report is being prepared;

         b)       Evaluated the effectiveness of the registrant's disclosure
                  controls and procedures and presented in this report our
                  conclusions about the effectiveness of the disclosure controls
                  and procedures, as of a date within 90 days prior to the
                  filing date of this report based on such evaluation; and

         c)       Disclosed in this report any change in the registrant's
                  internal control over financial reporting that occurred during
                  the registrant's most recent fiscal half-year (the
                  registrant's second fiscal half-year in the case of an annual
                  report) that has materially affected, or is reasonably likely
                  to materially affect, the registrant's internal control over
                  financial reporting; and

5.       The registrant's other certifying officers and I have disclosed to the
         registrant's auditors and the audit committee of the registrant's board
         of directors (or persons performing the equivalent functions):

         a)       All significant deficiencies and material weaknesses in the
                  design or operation of internal control over financial
                  reporting which are reasonably likely to adversely affect the
                  registrant's ability to record, process, summarize, and report
                  financial data; and

         b)       Any fraud, whether or not material, that involves management
                  or other employees who have a significant role in the
                  registrant's internal control over financial reporting.

Date: September 9, 2004                        /s/ R. Jay Gerken
                                        -------------------------------------
                                               R. Jay Gerken
                                               Chief Executive Officer



I, Andrew B. Shoup, certify that:

1.       I have reviewed this report on Form N-CSR of The Travelers Series Trust
         - Lazard International Stock Portfolio;

2.       Based on my knowledge, this report does not contain any untrue
         statement of a material fact or omit to state a material fact necessary
         to make the statements made, in light of the circumstances under which
         such statements were made, not misleading with respect to the period
         covered by this report;

3.       Based on my knowledge, the financial information included in this
         report, and the financial statements on which the financial information
         is based, fairly present in all material respects the financial
         condition, results of operations, changes in net assets, and cash flows
         (if the financial statements are required to include a statement of
         cash flows) of the registrant as of, and for, the periods presented in
         this report;

4.       The registrant's other certifying officers and I are responsible for
         establishing and maintaining disclosure controls and procedures (as
         defined in rule 30a-3(c) under the Investment Company Act) for the
         registrant and have:

         a)       Designed such disclosure controls and procedures, or caused
                  such disclosure controls and procedures to be designed under
                  our supervision, to ensure that material information relating
                  to the registrant, including its consolidated subsidiaries, is
                  made known to us by others within those entities, particularly
                  during the period in which this report is being prepared;

         b)       Evaluated the effectiveness of the registrant's disclosure
                  controls and procedures and presented in this report our
                  conclusions about the effectiveness of the disclosure controls
                  and procedures, as of a date within 90 days prior to the
                  filing date of this report based on such evaluation; and

         c)       Disclosed in this report any change in the registrant's
                  internal control over financial reporting that occurred during
                  the registrant's most recent fiscal half-year (the
                  registrant's second fiscal half-year in the case of an annual
                  report) that has materially affected, or is reasonably likely
                  to materially affect, the registrant's internal control over
                  financial reporting; and

5.       The registrant's other certifying officers and I have disclosed to the
         registrant's auditors and the audit committee of the registrant's board
         of directors (or persons performing the equivalent functions):

         a)       All significant deficiencies and material weaknesses in the
                  design or operation of internal control over financial
                  reporting which are reasonably likely to adversely affect the
                  registrant's ability to record, process, summarize, and report
                  financial data; and

         b)       Any fraud, whether or not material, that involves management
                  or other employees who have a significant role in the
                  registrant's internal control over financial reporting.

Date: September 9, 2004                         /s/ Andrew B. Shoup
                                            ---------------------------------
                                                Andrew B. Shoup
                                                Chief Administrative Officer



CERTIFICATIONS PURSUANT TO SECTION 302
EX-99.CERT

                                 CERTIFICATIONS

I, R. Jay Gerken, certify that:

1.       I have reviewed this report on Form N-CSR of The Travelers Series Trust
         - MFS Emerging Growth Portfolio;

2.       Based on my knowledge, this report does not contain any untrue
         statement of a material fact or omit to state a material fact necessary
         to make the statements made, in light of the circumstances under which
         such statements were made, not misleading with respect to the period
         covered by this report;

3.       Based on my knowledge, the financial statements, and other financial
         information included in this report, fairly present in all material
         respects the financial condition, results of operations, changes in net
         assets, and cash flows (if the financial statements are required to
         include a statement of cash flows) of the registrant as of, and for,
         the periods presented in this report;

4.       The registrant's other certifying officers and I are responsible for
         establishing and maintaining disclosure controls and procedures (as
         defined in Rule 30a-3(c) under the Investment Company Act of 1940) for
         the registrant and have:

         a)       Designed such disclosure controls and procedures, or caused
                  such disclosure controls and procedures to be designed under
                  our supervision, to ensure that material information relating
                  to the registrant, including its consolidated subsidiaries, is
                  made known to us by others within those entities, particularly
                  during the period in which this report is being prepared;

         b)       Evaluated the effectiveness of the registrant's disclosure
                  controls and procedures and presented in this report our
                  conclusions about the effectiveness of the disclosure controls
                  and procedures, as of a date within 90 days prior to the
                  filing date of this report based on such evaluation; and

         c)       Disclosed in this report any change in the registrant's
                  internal control over financial reporting that occurred during
                  the registrant's most recent fiscal half-year (the
                  registrant's second fiscal half-year in the case of an annual
                  report) that has materially affected, or is reasonably likely
                  to materially affect, the registrant's internal control over
                  financial reporting; and

5.       The registrant's other certifying officers and I have disclosed to the
         registrant's auditors and the audit committee of the registrant's board
         of directors (or persons performing the equivalent functions):

         a)       All significant deficiencies and material weaknesses in the
                  design or operation of internal control over financial
                  reporting which are reasonably likely to adversely affect the
                  registrant's ability to record, process, summarize, and report
                  financial data; and

         b)       Any fraud, whether or not material, that involves management
                  or other employees who have a significant role in the
                  registrant's internal control over financial reporting.

Date: September 9, 2004                   /s/ R. Jay Gerken
                                     ---------------------------------------
                                          R. Jay Gerken
                                          Chief Executive Officer



I, Andrew B. Shoup, certify that:

1.       I have reviewed this report on Form N-CSR of The Travelers Series Trust
         - MFS Emerging Growth Portfolio;

2.       Based on my knowledge, this report does not contain any untrue
         statement of a material fact or omit to state a material fact necessary
         to make the statements made, in light of the circumstances under which
         such statements were made, not misleading with respect to the period
         covered by this report;

3.       Based on my knowledge, the financial information included in this
         report, and the financial statements on which the financial information
         is based, fairly present in all material respects the financial
         condition, results of operations, changes in net assets, and cash flows
         (if the financial statements are required to include a statement of
         cash flows) of the registrant as of, and for, the periods presented in
         this report;

4.       The registrant's other certifying officers and I are responsible for
         establishing and maintaining disclosure controls and procedures (as
         defined in rule 30a-3(c) under the Investment Company Act) for the
         registrant and have:

         a)       Designed such disclosure controls and procedures, or caused
                  such disclosure controls and procedures to be designed under
                  our supervision, to ensure that material information relating
                  to the registrant, including its consolidated subsidiaries, is
                  made known to us by others within those entities, particularly
                  during the period in which this report is being prepared;

         b)       Evaluated the effectiveness of the registrant's disclosure
                  controls and procedures and presented in this report our
                  conclusions about the effectiveness of the disclosure controls
                  and procedures, as of a date within 90 days prior to the
                  filing date of this report based on such evaluation; and

         c)       Disclosed in this report any change in the registrant's
                  internal control over financial reporting that occurred during
                  the registrant's most recent fiscal half-year (the
                  registrant's second fiscal half-year in the case of an annual
                  report) that has materially affected, or is reasonably likely
                  to materially affect, the registrant's internal control over
                  financial reporting; and

5.       The registrant's other certifying officers and I have disclosed to the
         registrant's auditors and the audit committee of the registrant's board
         of directors (or persons performing the equivalent functions):

         a)       All significant deficiencies and material weaknesses in the
                  design or operation of internal control over financial
                  reporting which are reasonably likely to adversely affect the
                  registrant's ability to record, process, summarize, and report
                  financial data; and

         b)       Any fraud, whether or not material, that involves management
                  or other employees who have a significant role in the
                  registrant's internal control over financial reporting.

Date: September 9, 2004                       /s/ Andrew B. Shoup
                                        ----------------------------------------
                                              Andrew B. Shoup
                                              Chief Administrative Officer



CERTIFICATIONS PURSUANT TO SECTION 302
EX-99.CERT

                                 CERTIFICATIONS

I, R. Jay Gerken, certify that:

1.       I have reviewed this report on Form N-CSR of The Travelers Series Trust
         - Federated High Yield Portfolio;

2.       Based on my knowledge, this report does not contain any untrue
         statement of a material fact or omit to state a material fact necessary
         to make the statements made, in light of the circumstances under which
         such statements were made, not misleading with respect to the period
         covered by this report;

3.       Based on my knowledge, the financial statements, and other financial
         information included in this report, fairly present in all material
         respects the financial condition, results of operations, changes in net
         assets, and cash flows (if the financial statements are required to
         include a statement of cash flows) of the registrant as of, and for,
         the periods presented in this report;

4.       The registrant's other certifying officers and I are responsible for
         establishing and maintaining disclosure controls and procedures (as
         defined in Rule 30a-3(c) under the Investment Company Act of 1940) for
         the registrant and have:

         a)       Designed such disclosure controls and procedures, or caused
                  such disclosure controls and procedures to be designed under
                  our supervision, to ensure that material information relating
                  to the registrant, including its consolidated subsidiaries, is
                  made known to us by others within those entities, particularly
                  during the period in which this report is being prepared;

         b)       Evaluated the effectiveness of the registrant's disclosure
                  controls and procedures and presented in this report our
                  conclusions about the effectiveness of the disclosure controls
                  and procedures, as of a date within 90 days prior to the
                  filing date of this report based on such evaluation; and

         c)       Disclosed in this report any change in the registrant's
                  internal control over financial reporting that occurred during
                  the registrant's most recent fiscal half-year (the
                  registrant's second fiscal half-year in the case of an annual
                  report) that has materially affected, or is reasonably likely
                  to materially affect, the registrant's internal control over
                  financial reporting; and

5.       The registrant's other certifying officers and I have disclosed to the
         registrant's auditors and the audit committee of the registrant's board
         of directors (or persons performing the equivalent functions):

         a)       All significant deficiencies and material weaknesses in the
                  design or operation of internal control over financial
                  reporting which are reasonably likely to adversely affect the
                  registrant's ability to record, process, summarize, and report
                  financial data; and

         b)       Any fraud, whether or not material, that involves management
                  or other employees who have a significant role in the
                  registrant's internal control over financial reporting.

Date: September 9, 2004                         /s/ R. Jay Gerken
                                           ----------------------------------
                                                R. Jay Gerken
                                                Chief Executive Officer



I, Andrew B. Shoup, certify that:

1.       I have reviewed this report on Form N-CSR of The Travelers Series Trust
         - Federated High Yield Portfolio;

2.       Based on my knowledge, this report does not contain any untrue
         statement of a material fact or omit to state a material fact necessary
         to make the statements made, in light of the circumstances under which
         such statements were made, not misleading with respect to the period
         covered by this report;

3.       Based on my knowledge, the financial information included in this
         report, and the financial statements on which the financial information
         is based, fairly present in all material respects the financial
         condition, results of operations, changes in net assets, and cash flows
         (if the financial statements are required to include a statement of
         cash flows) of the registrant as of, and for, the periods presented in
         this report;

4.       The registrant's other certifying officers and I are responsible for
         establishing and maintaining disclosure controls and procedures (as
         defined in rule 30a-3(c) under the Investment Company Act) for the
         registrant and have:

         a)       Designed such disclosure controls and procedures, or caused
                  such disclosure controls and procedures to be designed under
                  our supervision, to ensure that material information relating
                  to the registrant, including its consolidated subsidiaries, is
                  made known to us by others within those entities, particularly
                  during the period in which this report is being prepared;

         b)       Evaluated the effectiveness of the registrant's disclosure
                  controls and procedures and presented in this report our
                  conclusions about the effectiveness of the disclosure controls
                  and procedures, as of a date within 90 days prior to the
                  filing date of this report based on such evaluation; and

         c)       Disclosed in this report any change in the registrant's
                  internal control over financial reporting that occurred during
                  the registrant's most recent fiscal half-year (the
                  registrant's second fiscal half-year in the case of an annual
                  report) that has materially affected, or is reasonably likely
                  to materially affect, the registrant's internal control over
                  financial reporting; and

5.       The registrant's other certifying officers and I have disclosed to the
         registrant's auditors and the audit committee of the registrant's board
         of directors (or persons performing the equivalent functions):

         a)       All significant deficiencies and material weaknesses in the
                  design or operation of internal control over financial
                  reporting which are reasonably likely to adversely affect the
                  registrant's ability to record, process, summarize, and report
                  financial data; and

         b)       Any fraud, whether or not material, that involves management
                  or other employees who have a significant role in the
                  registrant's internal control over financial reporting.

Date: September 9, 2004                        /s/ Andrew B. Shoup
                                         -------------------------------------
                                               Andrew B. Shoup
                                               Chief Administrative Officer



CERTIFICATIONS PURSUANT TO SECTION 302
EX-99.CERT

                                 CERTIFICATIONS

I, R. Jay Gerken, certify that:

1.       I have reviewed this report on Form N-CSR of The Travelers Series Trust
         - Federated Stock Portfolio;

2.       Based on my knowledge, this report does not contain any untrue
         statement of a material fact or omit to state a material fact necessary
         to make the statements made, in light of the circumstances under which
         such statements were made, not misleading with respect to the period
         covered by this report;

3.       Based on my knowledge, the financial statements, and other financial
         information included in this report, fairly present in all material
         respects the financial condition, results of operations, changes in net
         assets, and cash flows (if the financial statements are required to
         include a statement of cash flows) of the registrant as of, and for,
         the periods presented in this report;

4.       The registrant's other certifying officers and I are responsible for
         establishing and maintaining disclosure controls and procedures (as
         defined in Rule 30a-3(c) under the Investment Company Act of 1940) for
         the registrant and have:

         a)       Designed such disclosure controls and procedures, or caused
                  such disclosure controls and procedures to be designed under
                  our supervision, to ensure that material information relating
                  to the registrant, including its consolidated subsidiaries, is
                  made known to us by others within those entities, particularly
                  during the period in which this report is being prepared;

         b)       Evaluated the effectiveness of the registrant's disclosure
                  controls and procedures and presented in this report our
                  conclusions about the effectiveness of the disclosure controls
                  and procedures, as of a date within 90 days prior to the
                  filing date of this report based on such evaluation; and

         c)       Disclosed in this report any change in the registrant's
                  internal control over financial reporting that occurred during
                  the registrant's most recent fiscal half-year (the
                  registrant's second fiscal half-year in the case of an annual
                  report) that has materially affected, or is reasonably likely
                  to materially affect, the registrant's internal control over
                  financial reporting; and

5.       The registrant's other certifying officers and I have disclosed to the
         registrant's auditors and the audit committee of the registrant's board
         of directors (or persons performing the equivalent functions):

         a)       All significant deficiencies and material weaknesses in the
                  design or operation of internal control over financial
                  reporting which are reasonably likely to adversely affect the
                  registrant's ability to record, process, summarize, and report
                  financial data; and

         b)       Any fraud, whether or not material, that involves management
                  or other employees who have a significant role in the
                  registrant's internal control over financial reporting.

Date: September 9, 2004                               /s/ R. Jay Gerken
                                                 -------------------------------
                                                      R. Jay Gerken
                                                      Chief Executive Officer



I, Andrew B. Shoup, certify that:

1.       I have reviewed this report on Form N-CSR of The Travelers Series Trust
         - Federated Stock Portfolio;

2.       Based on my knowledge, this report does not contain any untrue
         statement of a material fact or omit to state a material fact necessary
         to make the statements made, in light of the circumstances under which
         such statements were made, not misleading with respect to the period
         covered by this report;

3.       Based on my knowledge, the financial information included in this
         report, and the financial statements on which the financial information
         is based, fairly present in all material respects the financial
         condition, results of operations, changes in net assets, and cash flows
         (if the financial statements are required to include a statement of
         cash flows) of the registrant as of, and for, the periods presented in
         this report;

4.       The registrant's other certifying officers and I are responsible for
         establishing and maintaining disclosure controls and procedures (as
         defined in rule 30a-3(c) under the Investment Company Act) for the
         registrant and have:

         a)       Designed such disclosure controls and procedures, or caused
                  such disclosure controls and procedures to be designed under
                  our supervision, to ensure that material information relating
                  to the registrant, including its consolidated subsidiaries, is
                  made known to us by others within those entities, particularly
                  during the period in which this report is being prepared;

         b)       Evaluated the effectiveness of the registrant's disclosure
                  controls and procedures and presented in this report our
                  conclusions about the effectiveness of the disclosure controls
                  and procedures, as of a date within 90 days prior to the
                  filing date of this report based on such evaluation; and

         c)       Disclosed in this report any change in the registrant's
                  internal control over financial reporting that occurred during
                  the registrant's most recent fiscal half-year (the
                  registrant's second fiscal half-year in the case of an annual
                  report) that has materially affected, or is reasonably likely
                  to materially affect, the registrant's internal control over
                  financial reporting; and

5.       The registrant's other certifying officers and I have disclosed to the
         registrant's auditors and the audit committee of the registrant's board
         of directors (or persons performing the equivalent functions):

         a)       All significant deficiencies and material weaknesses in the
                  design or operation of internal control over financial
                  reporting which are reasonably likely to adversely affect the
                  registrant's ability to record, process, summarize, and report
                  financial data; and

         b)       Any fraud, whether or not material, that involves management
                  or other employees who have a significant role in the
                  registrant's internal control over financial reporting.

Date: September 9, 2004                         /s/ Andrew B. Shoup
                                            -----------------------------------
                                                Andrew B. Shoup
                                                Chief Administrative Officer



CERTIFICATIONS PURSUANT TO SECTION 302
EX-99.CERT

                                 CERTIFICATIONS

I, R. Jay Gerken, certify that:

1.       I have reviewed this report on Form N-CSR of The Travelers Series Trust
         - Disciplined Mid Cap Stock Portfolio;

2.       Based on my knowledge, this report does not contain any untrue
         statement of a material fact or omit to state a material fact necessary
         to make the statements made, in light of the circumstances under which
         such statements were made, not misleading with respect to the period
         covered by this report;

3.       Based on my knowledge, the financial statements, and other financial
         information included in this report, fairly present in all material
         respects the financial condition, results of operations, changes in net
         assets, and cash flows (if the financial statements are required to
         include a statement of cash flows) of the registrant as of, and for,
         the periods presented in this report;

4.       The registrant's other certifying officers and I are responsible for
         establishing and maintaining disclosure controls and procedures (as
         defined in Rule 30a-3(c) under the Investment Company Act of 1940) for
         the registrant and have:

         a)       Designed such disclosure controls and procedures, or caused
                  such disclosure controls and procedures to be designed under
                  our supervision, to ensure that material information relating
                  to the registrant, including its consolidated subsidiaries, is
                  made known to us by others within those entities, particularly
                  during the period in which this report is being prepared;

         b)       Evaluated the effectiveness of the registrant's disclosure
                  controls and procedures and presented in this report our
                  conclusions about the effectiveness of the disclosure controls
                  and procedures, as of a date within 90 days prior to the
                  filing date of this report based on such evaluation; and

         c)       Disclosed in this report any change in the registrant's
                  internal control over financial reporting that occurred during
                  the registrant's most recent fiscal half-year (the
                  registrant's second fiscal half-year in the case of an annual
                  report) that has materially affected, or is reasonably likely
                  to materially affect, the registrant's internal control over
                  financial reporting; and

5.       The registrant's other certifying officers and I have disclosed to the
         registrant's auditors and the audit committee of the registrant's board
         of directors (or persons performing the equivalent functions):

         a)       All significant deficiencies and material weaknesses in the
                  design or operation of internal control over financial
                  reporting which are reasonably likely to adversely affect the
                  registrant's ability to record, process, summarize, and report
                  financial data; and

         b)       Any fraud, whether or not material, that involves management
                  or other employees who have a significant role in the
                  registrant's internal control over financial reporting.

Date: September 9, 2004                         /s/ R. Jay Gerken
                                            -----------------------------------
                                                R. Jay Gerken
                                                Chief Executive Officer



I, Andrew B. Shoup, certify that:

1.       I have reviewed this report on Form N-CSR of The Travelers Series Trust
         - Disciplined Mid Cap Stock Portfolio;

2.       Based on my knowledge, this report does not contain any untrue
         statement of a material fact or omit to state a material fact necessary
         to make the statements made, in light of the circumstances under which
         such statements were made, not misleading with respect to the period
         covered by this report;

3.       Based on my knowledge, the financial information included in this
         report, and the financial statements on which the financial information
         is based, fairly present in all material respects the financial
         condition, results of operations, changes in net assets, and cash flows
         (if the financial statements are required to include a statement of
         cash flows) of the registrant as of, and for, the periods presented in
         this report;

4.       The registrant's other certifying officers and I are responsible for
         establishing and maintaining disclosure controls and procedures (as
         defined in rule 30a-3(c) under the Investment Company Act) for the
         registrant and have:

         a)       Designed such disclosure controls and procedures, or caused
                  such disclosure controls and procedures to be designed under
                  our supervision, to ensure that material information relating
                  to the registrant, including its consolidated subsidiaries, is
                  made known to us by others within those entities, particularly
                  during the period in which this report is being prepared;

         b)       Evaluated the effectiveness of the registrant's disclosure
                  controls and procedures and presented in this report our
                  conclusions about the effectiveness of the disclosure controls
                  and procedures, as of a date within 90 days prior to the
                  filing date of this report based on such evaluation; and

         c)       Disclosed in this report any change in the registrant's
                  internal control over financial reporting that occurred during
                  the registrant's most recent fiscal half-year (the
                  registrant's second fiscal half-year in the case of an annual
                  report) that has materially affected, or is reasonably likely
                  to materially affect, the registrant's internal control over
                  financial reporting; and

5.       The registrant's other certifying officers and I have disclosed to the
         registrant's auditors and the audit committee of the registrant's board
         of directors (or persons performing the equivalent functions):

         a)       All significant deficiencies and material weaknesses in the
                  design or operation of internal control over financial
                  reporting which are reasonably likely to adversely affect the
                  registrant's ability to record, process, summarize, and report
                  financial data; and

         b)       Any fraud, whether or not material, that involves management
                  or other employees who have a significant role in the
                  registrant's internal control over financial reporting.

Date: September 9, 2004                          /s/ Andrew B. Shoup
                                             -----------------------------------
                                                 Andrew B. Shoup
                                                 Chief Administrative Officer