EXHIBIT (a)

                                  CERTIFICATION

I, Greg J. Stark, certify that:

1. I have reviewed this report on Form N-CSR of Russell Investment Funds;

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 officer 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) and internal control
over financial reporting (as defined in Rule 30a-3(d) 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) Designed such internal control over financial reporting, or caused such
         internal control over financial reporting to be designed under our
         supervision, to provide reasonable assurance regarding the reliability
         of financial reporting and the preparation of financial statements for
         external purposes in accordance with generally accepted accounting
         principles;

     (c) 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

     (d) Disclosed in this report any change in the Registrant's internal
         control over financial reporting that occurred during the second
         quarter of the period covered by this 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 officer 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 information; 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: August 14, 2006                            /s/ Greg J. Stark
                                                 -------------------------------
                                                 Greg J. Stark
                                                 Principal Executive Officer and
                                                   Chief Executive Officer



                                                                     EXHIBIT (a)

                                  CERTIFICATION

I, Mark E. Swanson, certify that:

1. I have reviewed this report on Form N-CSR of Russell Investment Funds;

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 officer 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) and internal control
over financial reporting (as defined in Rule 30a-3(d) under the Investment
Company Act of 2940) 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) Designed such internal control over financial reporting, or caused such
         internal control over financial reporting to be designed under our
         supervision, to provide reasonable assurance regarding the reliability
         of financial reporting and the preparation of financial statements for
         external purposes in accordance with generally accepted accounting
         principles;

     (c) 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

     (d) Disclosed in this report any change in the Registrant's internal
         control over financial reporting that occurred during the fourth fiscal
         quarter of period covered by this 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 officer 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 information; 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: August 14, 2006                     /s/ Mark E. Swanson
                                          --------------------------------------
                                          Mark E. Swanson
                                          Principal Financial Officer, Principal
                                          Accounting Officer and Treasurer