I, J. Christopher Donahue, certify that:

1.    I have reviewed this report on Form N-CSR of Federated Municipal
      Opportunities Fund, Inc. ("registrant");

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.    NA

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
            registrant's most recent fiscal half-year (the registrant's
            second 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 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: October 23, 2003
/S/ J. Christopher Donahue
President - Principal Executive Officer





I, Richard J. Thomas, certify that:

1.    I have reviewed this report on Form N-CSR of Federated Municipal
      Opportunities Fund, Inc. ("registrant");

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.    NA

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
            registrant's most recent fiscal half-year (the registrant's
            second 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 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: October 23, 2003
/S/ Richard J. Thomas
President - Principal Financial Officer




                          SECTION 906 CERTIFICATION

Pursuant to 18 U.S.C.ss. 1350, the undersigned officers of Federated Municipal
Opportunities Fund, Inc. (the "Registrant"), hereby certify, to the best of
our knowledge, that the Registrant's Report on Form N-CSR for the period
ended 8/31/03 (the "Report") fully complies with the requirements of Section
13(a) or 15(d), as applicable, of the Securities and Exchange Act of 1934 and
that the information contained in the Report fairly presents, in all material
respects, the financial condition and results of operations of the Registrant.


Dated: October 23, 2003_____

/s/ J. Christopher Donahue

Title: President, Principal Executive Officer



Dated: October 23, 2003_____

/s/ Richard J. Thomas

Title: Treasurer, Principal Financial Officer

This certification is being furnished solely pursuant to 18 U.S.C.ss. 1350 and
is not being filed as part of the Report or as a separate disclosure document.