Form N-Q

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549

FORM N-Q


QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANY

Investment Company Act file number         811-05488         

        Nuveen Municipal Income Fund, Inc.         
(Exact name of registrant as specified in charter)

Nuveen Investments
        333 West Wacker Drive, Chicago, Illinois 60606         
(Address of principal executive offices) (Zip code)


Kevin J. McCarthy Vice President and Secretary
        333 West Wacker Drive, Chicago, Illinois 60606         
(Name and address of agent for service)

Registrant's telephone number, including area code:         312-917-7700        

Date of fiscal year end:            10/31          

Date of reporting period:         7/31/08         

Form N-Q is to be used by management investment companies, other than small business investment companies registered on Form N-5 (§§ 239.24 and 274.5 of this chapter), to file reports with the Commission, not later than 60 days after the close of the first and third fiscal quarters, pursuant to rule 30b1-5 under the Investment Company Act of 1940 (17 CFR 270.30b1-5). The Commission may use the information provided on Form N-Q in its regulatory, disclosure review, inspection, and policymaking roles.

A registrant is required to disclose the information specified by Form N-Q, and the Commission will make this information public. A registrant is not required to respond to the collection of information contained in Form N-Q unless the Form displays a currently valid Office of Management and Budget ("OMB") control number. Please direct comments concerning the accuracy of the information collection burden estimate and any suggestions for reducing the burden to the Secretary, Securities and Exchange Commission, 450 Fifth Street, NW, Washington, DC 20549-0609. The OMB has reviewed this collection of information under the clearance requirements of 44 U.S.C. § 3507.

Item 1. Schedule of Investments

    Portfolio of Investments (Unaudited)             
    Nuveen Municipal Income Fund, Inc. (NMI)             
    July 31, 2008             
Principal        Optional Call         
Amount (000)    Description (1)    Provisions (2)    Ratings (3)    Value 
    Alabama – 0.8%             
$            690    Phenix City Industrial Development Board, Alabama, Environmental Improvement Revenue Bonds,    5/12 at 100.00    BBB    $  634,814 
     MeadWestvaco Corporation, Series 2002A, 6.350%, 5/15/35 (Alternative Minimum Tax)             
    California – 19.4%             
5,530    Adelanto School District, San Bernardino County, California, General Obligation Bonds, Series    No Opt. Call    AA    2,789,000 
     1997A, 0.000%, 9/01/22 – MBIA Insured             
    Brea Olinda Unified School District, California, General Obligation Bonds, Series 1999A:             
2,000     0.000%, 8/01/21 – FGIC Insured    No Opt. Call    AA–    1,031,340 
2,070     0.000%, 8/01/22 – FGIC Insured    No Opt. Call    AA–    1,002,025 
2,120     0.000%, 8/01/23 – FGIC Insured    No Opt. Call    AA–    963,074 
1,000    California Health Facilities Financing Authority, Revenue Bonds, Kaiser Permanante System,    4/16 at 100.00    A+    946,110 
     Series 2006, 5.250%, 4/01/39             
250    California Housing Finance Agency, California, Home Mortgage Revenue Bonds, Series 2007E,    2/17 at 100.00    Aa2    205,233 
     4.800%, 8/01/37 (Alternative Minimum Tax)             
3,000    California State Public Works Board, Lease Revenue Bonds, Department of Mental Health,    6/14 at 100.00    A    3,001,290 
     Coalinga State Hospital, Series 2004A, 5.000%, 6/01/25             
1,000    California Statewide Community Development Authority, Revenue Bonds, Daughters of Charity    7/15 at 100.00    BBB+    863,830 
     Health System, Series 2005A, 5.000%, 7/01/39             
500    California, General Obligation Bonds, Series 2004, 5.200%, 4/01/26    4/14 at 100.00    A+    506,865 
1,000    California, General Obligation Bonds, Series 2005, 5.000%, 3/01/27    3/16 at 100.00    A+    1,001,830 
3,000    Golden State Tobacco Securitization Corporation, California, Tobacco Settlement Asset-Backed    6/13 at 100.00    AAA    3,430,200 
     Bonds, Series 2003A-1, 6.750%, 6/01/39 (Pre-refunded 6/01/13)             
500    Lake Elsinore Public Finance Authority, California, Local Agency Revenue Refunding Bonds,    10/13 at 102.00    N/R    501,320 
     Series 2003H, 6.375%, 10/01/33             
21,970    Total California            16,242,117 
    Colorado – 6.3%             
780    Colorado Educational and Cultural Facilities Authority, Charter School Revenue Bonds, Douglas    7/12 at 100.00    BBB    783,916 
     County School District RE-1 – DCS Montessori School, Series 2002A, 6.000%, 7/15/22             
430    Colorado Educational and Cultural Facilities Authority, Charter School Revenue Bonds,    8/11 at 100.00    AAA    483,595 
     Peak-to-Peak Charter School, Series 2001, 7.500%, 8/15/21 (Pre-refunded 8/15/11)             
1,000    Colorado Educational and Cultural Facilities Authority, Charter School Revenue Bonds, Weld    6/11 at 100.00    Ba1 (4)    1,119,230 
     County School District 6 – Frontier Academy, Series 2001, 7.375%, 6/01/31             
     (Pre-refunded 6/01/11)             
1,000    Colorado Health Facilities Authority, Revenue Bonds, Evangelical Lutheran Good Samaritan    6/16 at 100.00    A–    878,210 
     Society, Series 2005, 5.000%, 6/01/35             
2,000    Denver City and County, Colorado, Airport System Revenue Refunding Bonds, Series 2000A,    11/10 at 100.00    AA    2,038,060 
     6.000%, 11/15/16 – AMBAC Insured (Alternative Minimum Tax)             
5,210    Total Colorado            5,303,011 
    Connecticut – 2.3%             
1,480    Capitol Region Education Council, Connecticut, Revenue Bonds, Series 1995, 6.750%, 10/15/15    10/08 at 100.00    BBB    1,482,250 
450    Eastern Connecticut Resource Recovery Authority, Solid Waste Revenue Bonds, Wheelabrator    1/09 at 100.00    BBB    448,209 
     Lisbon Project, Series 1993A, 5.500%, 1/01/14 (Alternative Minimum Tax)             
1,930    Total Connecticut            1,930,459 
    Florida – 2.9%             
155    Dade County Industrial Development Authority, Florida, Revenue Bonds, Miami Cerebral Palsy    12/08 at 100.50    N/R    150,570 
     Residential Services Inc., Series 1995, 8.000%, 6/01/22             
1,250    Martin County Industrial Development Authority, Florida, Industrial Development Revenue Bonds,    12/08 at 100.00    BB+    1,252,350 
     Indiantown Cogeneration LP, Series 1994A, 7.875%, 12/15/25 (Alternative Minimum Tax)             
600    Martin County Industrial Development Authority, Florida, Industrial Development Revenue    12/08 at 100.00    BB+    601,218 
     Refunding Bonds, Indiantown Cogeneration LP, Series 1995B, 8.050%, 12/15/25             
     (Alternative Minimum Tax)             
500    Tolomato Community Development District, Florida, Special Assessment Bonds, Series 2006,    5/14 at 101.00    N/R    418,345 
     5.400%, 5/01/37             
2,505    Total Florida            2,422,483 
    Illinois – 7.5%             
1,190    Chicago, Illinois, Tax Increment Allocation Bonds, Irving/Cicero Redevelopment Project, Series    1/09 at 100.00    N/R    1,196,057 
     1998, 7.000%, 1/01/14             
    Illinois Development Finance Authority, Revenue Bonds, Chicago Charter School Foundation,             
    Series 2002A:             
500     6.125%, 12/01/22 (Pre-refunded 12/01/12)    12/12 at 100.00    BBB (4)    559,680 
1,000     6.250%, 12/01/32 (Pre-refunded 12/01/12)    12/12 at 100.00    BBB (4)    1,128,270 
1,000    Illinois Finance Authority, Revenue Bonds, Children’s Memorial Hospital, Tender Option Bond    8/18 at 100.00    AAA    741,260 
     Trust 2008-1098, 13.259%, 8/15/33 – AGC Insured (IF)             
1,550    Illinois Health Facilities Authority, Revenue Bonds, Condell Medical Center, Series 2002,    5/12 at 100.00    Baa3    1,405,091 
     5.500%, 5/15/32             
1,305    North Chicago, Illinois, General Obligation Bonds, Series 2005B, 5.000%, 11/01/25 –    11/15 at 100.00    N/R    1,294,482 
     FGIC Insured             
6,545    Total Illinois            6,324,840 
    Indiana – 3.9%             
2,000    Indiana Health Facility Financing Authority, Hospital Revenue Bonds, Riverview Hospital,    8/12 at 101.00    Baa1    2,030,460 
     Series 2002, 6.125%, 8/01/31             
1,210    Whitley County, Indiana, Solid Waste and Sewerage Disposal Revenue Bonds, Steel Dynamics Inc.,    11/10 at 102.00    N/R    1,235,204 
     Series 1998, 7.250%, 11/01/18 (Alternative Minimum Tax)             
3,210    Total Indiana            3,265,664 
    Louisiana – 2.1%             
    Louisiana Public Facilities Authority, Extended Care Facilities Revenue Bonds, Comm-Care             
    Corporation Project, Series 1994:             
145     11.000%, 2/01/14 (ETM)    No Opt. Call    N/R (4)    177,574 
1,295     11.000%, 2/01/14 (ETM)    No Opt. Call    N/R (4)    1,585,715 
1,440    Total Louisiana            1,763,289 
    Maryland – 1.2%             
1,000    Maryland Energy Financing Administration, Revenue Bonds, AES Warrior Run Project, Series 1995,    10/08 at 100.00    N/R    969,930 
     7.400%, 9/01/19 (Alternative Minimum Tax)             
    Massachusetts – 2.2%             
420    Massachusetts Development Finance Agency, Resource Recovery Revenue Bonds, Ogden Haverhill    12/09 at 102.00    BBB    429,160 
     Associates, Series 1999A, 6.700%, 12/01/14 (Alternative Minimum Tax)             
1,500    Massachusetts Development Finance Agency, Revenue Bonds, Boston Architectural College, Series    1/17 at 100.00    N/R    1,184,940 
     2006, 5.000%, 1/01/37 – ACA Insured             
270    Massachusetts Industrial Finance Agency, Resource Recovery Revenue Refunding Bonds, Ogden    12/08 at 102.00    BBB    267,265 
     Haverhill Project, Series 1998A, 5.450%, 12/01/12 (Alternative Minimum Tax)             
2,190    Total Massachusetts            1,881,365 
    Michigan – 3.9%             
1,000    Delta County Economic Development Corporation, Michigan, Environmental Improvement Revenue    4/12 at 100.00    AAA    1,105,730 
     Refunding Bonds, MeadWestvaco Corporation – Escanaba Paper Company, Series 2002B, 6.450%,             
     4/15/23 (Pre-refunded 4/15/12) (Alternative Minimum Tax)             
2,150    Michigan State Hospital Finance Authority, Hospital Revenue Refunding Bonds, Sinai Hospital,    1/09 at 100.00    Ba3    2,149,699 
     Series 1995, 6.625%, 1/01/16             
3,150    Total Michigan            3,255,429 
    Missouri – 4.5%             
4,450    Missouri Environmental Improvement and Energy Resources Authority, Water Facility Revenue    12/16 at 100.00    AA    3,750,327 
     Bonds, Missouri-American Water Company, Series 2006, 4.600%, 12/01/36 –             
     AMBAC Insured (Alternative Minimum Tax) (UB)             
    Montana – 1.3%             
1,200    Montana Board of Investments, Exempt Facility Revenue Bonds, Stillwater Mining Company, Series    7/10 at 101.00    BB–    1,131,708 
     2000, 8.000%, 7/01/20 (Alternative Minimum Tax)             
    Nebraska – 1.2%             
1,000    Washington County, Nebraska, Wastewater Facilities Revenue Bonds, Cargill Inc., Series 2002,    11/12 at 101.00    A    1,040,550 
     5.900%, 11/01/27 (Alternative Minimum Tax)             
    New York – 5.9%             
1,000    Dormitory Authority of the State of New York, Revenue Bonds, Brooklyn Law School, Series    7/13 at 100.00    A    1,032,500 
     2003A, 5.500%, 7/01/15 – RAAI Insured             
3,735    Yates County Industrial Development Agency, New York, FHA-Insured Civic Facility Mortgage    2/11 at 101.00    AAA    3,879,729 
     Revenue Bonds, Soldiers and Sailors Memorial Hospital, Series 2000A, 6.000%, 2/01/41             
4,735    Total New York            4,912,229 
    Ohio – 4.3%             
520    Buckeye Tobacco Settlement Financing Authority, Ohio, Tobacco Settlement Asset-Backed Revenue    6/17 at 100.00    BBB    422,469 
     Bonds, Senior Lien, Series 2007A-2, 5.875%, 6/01/47             
1,000    Erie County, Ohio, Hospital Facilities Revenue Bonds, Firelands Regional Medical Center    8/16 at 100.00    A    919,780 
     Project, Series 2006, 5.250%, 8/15/46             
2,300    Ohio Water Development Authority, Solid Waste Disposal Revenue Bonds, Bay Shore Power, Series    9/09 at 102.00    N/R    2,303,795 
     1998B, 6.625%, 9/01/20 (Alternative Minimum Tax)             
3,820    Total Ohio            3,646,044 
    Pennsylvania – 2.2%             
1,080    Allegheny County Hospital Development Authority, Pennsylvania, Revenue Bonds, West Penn    11/10 at 102.00    AAA    1,261,397 
     Allegheny Health System, Series 2000B, 9.250%, 11/15/30 (Pre-refunded 11/15/10)             
605    Carbon County Industrial Development Authority, Pennsylvania, Resource Recovery Revenue    No Opt. Call    BBB–    616,277 
     Refunding Bonds, Panther Creek Partners Project, Series 2000, 6.650%, 5/01/10 (Alternative             
     Minimum Tax)             
1,685    Total Pennsylvania            1,877,674 
    Rhode Island – 0.6%             
500    Rhode Island Tobacco Settlement Financing Corporation, Tobacco Settlement Asset-Backed Bonds,    6/12 at 100.00    BBB    452,780 
     Series 2002A, 6.250%, 6/01/42             
    South Carolina – 6.4%             
2,500    Greenville County School District, South Carolina, Installment Purchase Revenue Bonds, Series    12/12 at 101.00    AA    2,722,600 
     2002, 5.500%, 12/01/13             
475    Piedmont Municipal Power Agency, South Carolina, Electric Revenue Bonds, Series 1991, 6.750%,    No Opt. Call    Baa1 (4)    585,599 
     1/01/19 – FGIC Insured (ETM)             
1,105    South Carolina JOBS Economic Development Authority, Economic Development Revenue Bonds, Bon    11/12 at 100.00    A–    1,108,856 
     Secours Health System Inc., Series 2002B, 5.625%, 11/15/30             
895    Tobacco Settlement Revenue Management Authority, South Carolina, Tobacco Settlement    5/11 at 101.00    BBB (4)    947,823 
     Asset-Backed Bonds, Series 2001B, 6.000%, 5/15/22 (Pre-refunded 5/15/11)             
4,975    Total South Carolina            5,364,878 
    Tennessee – 4.2%             
1,000    Knox County Health, Educational and Housing Facilities Board, Tennessee, Hospital Revenue    4/12 at 101.00    Ba2    1,041,830 
     Bonds, Baptist Health System of East Tennessee Inc., Series 2002, 6.375%, 4/15/22             
    Shelby County Health, Educational and Housing Facilities Board, Tennessee, Hospital Revenue             
    Bonds, Methodist Healthcare, Series 2002:             
375     6.500%, 9/01/26 (Pre-refunded 9/01/12)    9/12 at 100.00    AAA    426,390 
625     6.500%, 9/01/26 (Pre-refunded 9/01/12)    9/12 at 100.00    AAA    710,650 
1,500    Sumner County Health, Educational, and Housing Facilities Board, Tennessee, Revenue Refunding    11/17 at 100.00    N/R    1,366,380 
     Bonds, Sumner Regional Health System Inc., Series 2007, 5.500%, 11/01/37             
3,500    Total Tennessee            3,545,250 
    Texas – 13.8%             
1,500    Cameron Education Finance Corporation, Texas, Charter School Revenue Bonds, Faith Family    8/16 at 100.00    BBB–    1,256,955 
     Academy Charter School, Series 2006A, 5.250%, 8/15/36 – ACA Insured             
2,000    Gulf Coast Waste Disposal Authority, Texas, Sewerage and Solid Waste Disposal Revenue Bonds,    4/12 at 100.00    A2    1,950,580 
     Anheuser Busch Company, Series 2002, 5.900%, 4/01/36 (Alternative Minimum Tax)             
2,000    Matagorda County Navigation District 1, Texas, Collateralized Revenue Refunding Bonds, Houston    10/13 at 101.00    AA    1,923,560 
     Light and Power Company, Series 1995, 4.000%, 10/15/15 – MBIA Insured             
4,120    North Texas Thruway Authority, Second Tier System Revenue Refunding Bonds, 5.750%, 1/01/38 (UB)    1/18 at 100.00    A3    3,978,231 
    Weslaco Health Facilities Development Corporation, Texas, Hospital Revenue Bonds, Knapp             
    Medical Center, Series 2002:             
2,000     6.250%, 6/01/25    6/12 at 100.00    BBB+    2,046,860 
50     6.250%, 6/01/32    6/12 at 100.00    BBB+    50,776 
1,000    West Texas Independent School District, McLennan and Hill Counties, General Obligation    8/13 at 51.84    AAA    398,310 
     Refunding Bonds, Series 1998, 0.000%, 8/15/25             
12,670    Total Texas            11,605,272 
    Virgin Islands – 3.0%             
2,545    Virgin Islands Public Finance Authority, Senior Lien Matching Fund Loan Note, Series 2004A,    10/14 at 100.00    BBB    2,532,071 
     5.250%, 10/01/19             
    Virginia – 3.1%             
1,000    Chesterfield County Industrial Development Authority, Virginia, Pollution Control Revenue    11/10 at 102.00    Baa1    1,053,580 
     Bonds, Virginia Electric and Power Company, Series 1987A, 5.875%, 6/01/17             
1,500    Mecklenburg County Industrial Development Authority, Virginia, Revenue Bonds, UAE Mecklenburg    10/12 at 100.00    Baa1    1,546,125 
     Cogeneration LP, Series 2002, 6.500%, 10/15/17 (Alternative Minimum Tax)             
2,500    Total Virginia            2,599,705 
    Washington – 0.6%             
500    Washington State Health Care Facilities Authority, Revenue Bonds, Northwest Hospital and    No Opt. Call    N/R    453,365 
     Medical Center of Seattle, Series 2007, 5.700%, 12/01/32             
    West Virginia – 2.4%             
2,050    Mason County, West Virginia, Pollution Control Revenue Bonds, Appalachian Power Company,    10/11 at 100.00    BBB    1,970,870 
     Series 2003L, 5.500%, 10/01/22             
    Wisconsin – 1.2%             
1,000    Wisconsin Health and Educational Facilities Authority, Revenue Bonds, Carroll College Inc.,    10/11 at 100.00    BBB    1,019,251 
     Series 2001, 6.250%, 10/01/21             
$         96,970    Total Investments (cost $89,370,759) – 107.2%            89,895,375 
    Floating Rate Obligations – (7.6)%            (6,340,000)
    Other Assets Less Liabilities – 0.4%            284,646 
    Net Assets – 100%            $  83,840,021 

Futures Contracts outstanding at July 31, 2008:                     
                    Unrealized 
    Contract    Number of    Contract    Value at    Appreciation 
Type    Position    Contracts    Expiration    July 31, 2008    (Depreciation)
U.S. Treasury Bond    Long    23    9/08    $2,656,500    $(9,043)

(1)    All percentages shown in the Portfolio of Investments are based on net assets. 
(2)    Optional Call Provisions: Dates (month and year) and prices of the earliest optional call or redemption. 
    There may be other call provisions at varying prices at later dates. Certain mortgage-backed securities 
    may be subject to periodic principal paydowns. 
(3)    Ratings: Using the higher of Standard & Poor's Group ("Standard & Poor's") or Moody's Investor Service, 
    Inc. ("Moody's") rating. Ratings below BBB by Standard & Poor's or Baa by Moody's are considered to 
    be below investment grade. 
    The Portfolio of Investments may reflect the ratings on certain bonds insured by ACA, AMBAC, CIFG, FGIC, 
    MBIA, RAAI and XLCA as of July 31, 2008. Subsequent to July 31, 2008, and during the period this 
    Portfolio of Investments was prepared, there may have been reductions to the ratings of certain bonds 
    resulting from changes to the ratings of the underlying insurers both during the period and after period 
    end. Such reductions would likely reduce the effective rating of many of the bonds insured by that insurer 
    or insurers presented at period end. 
(4)    Backed by an escrow or trust containing sufficient U.S. Government or U.S. Government agency securities 
    which ensure the timely payment of principal and interest. Such investments are normally considered to 
    be equivalent to AAA rated securities. 
N/R    Not rated. 
(ETM)    Escrowed to maturity. 
(IF)    Inverse floating rate investment. 
(UB)    Underlying bond of inverse floating rate trust reflected as a financing transaction pursuant to the 
    provisions of SFAS No. 140. 

Income Tax Information

The following information is presented on an income tax basis. Differences between amounts for financial statement and federal income tax purposes are primarily due to timing differences in recognizing taxable market discount, timing differences in recognizing certain gains and losses on investment transactions and the treatment of investments in inverse floating rate transactions subject to SFAS No. 140. To the extent that differences arise that are permanent in nature, such amounts are reclassified within the capital accounts on the Statement of Assets and Liabilities presented in the annual report, based on their federal tax basis treatment; temporary differences do not require reclassification. Temporary and permanent differences do not impact the net asset value of the Fund.

At July 31, 2008, the cost of investments was $82,927,124.

Gross unrealized appreciation and gross unrealized depreciation of investments at July 31, 2008, were as follows:
Gross unrealized:     
  Appreciation    $ 3,345,681 
  Depreciation    (2,718,557)
Net unrealized appreciation (depreciation) of investments    $    627,124 

Item 2. Controls and Procedures.

  1. The registrant's principal executive and principal financial officers, or persons performing similar functions, have concluded that the registrant's disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940, as amended (the "1940 Act") (17 CFR 270.30a-3(c))) are effective, as of a date within 90 days of the filing date of this report that includes the disclosure required by this paragraph, based on their evaluation of the controls and procedures required by Rule 30a-3(b) under the 1940 Act (17 CFR 270.30a-3(b)) and Rule 13a-15(b) or 15d-15(b) under the Securities Exchange Act of 1934 (17 CFR 240.13a-15(b) or 240.15d-15(b)).
  2. There were no changes in the registrant's internal control over financial reporting (as defined in Rule 30a-3(d) under the 1940 Act (17 CFR 270.30a-3(d)) that occurred during the registrant's last fiscal quarter that have materially affected, or are reasonably likely to materially affect, the registrant's internal control over financial reporting.

Item 3. Exhibits.

File as exhibits as part of this Form a separate certification for each principal executive officer and principal financial officer of the registrant as required by Rule 30a-2(a) under the 1940 Act (17 CFR 270.30a-2(a)), exactly as set forth below: See EX-99 CERT attached hereto.


SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

(Registrant)         Nuveen Municipal Income Fund, Inc.         

By (Signature and Title)          /s/ Kevin J. McCarthy                    
                                                   Kevin J. McCarthy
                                                  Vice President and Secretary

Date         September 29, 2008        

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

By (Signature and Title)         /s/ Gifford R. Zimmerman                    
                                                  Gifford R. Zimmerman
                                                 Chief Administrative Officer (principal executive officer) 

Date         September 29, 2008        

By (Signature and Title)         /s/ Stephen D. Foy                              
                                                  Stephen D. Foy
                                                 Vice President and Controller (principal financial officer) 

Date        September 29, 2008