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         811-6622         

        Nuveen Select Tax-Free Income Portfolio 2         
(Exact name of registrant as specified in charter)


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


Jessica R. Droeger—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:            03/31          

Date of reporting period:          06/30/05         

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 Select Tax-Free Income Portfolio 2 (NXQ)             
                   June 30, 2005             
 
 
 
Principal        Optional Call        Market 
Amount (000)    Description    Provisions*    Ratings**    Value 
 
    Arkansas - 1.6%             
$ 1,000    Fort Smith, Arkansas, Water and Sewer Revenue Refunding and Construction Bonds, Series 2002A,    10/11 at 100.00    AAA    $ 1,087,340 
    5.000%, 10/01/19 - FSA Insured             
1,000    Sebastian County Health Facilities Board, Arkansas, Hospital Revenue Improvement Bonds, Sparks    11/11 at 101.00    Baa1    1,037,310 
    Regional Medical Center, Series 2001A, 5.250%, 11/01/21             
2,000    University of Arkansas, Fayetteville, Various Facilities Revenue Bonds, Series 2002, 5.000%,    12/12 at 100.00    Aaa    2,106,880 
    12/01/32 - FGIC Insured             
 
    California - 5.6%             
1,000    Alameda Corridor Transportation Authority, California, Subordinate Lien Revenue Bonds, Series    10/17 at 100.00    AAA    750,340 
    2004A, 0.000%, 10/01/25 - AMBAC Insured             
2,500    California, General Obligation Bonds, Series 1997, 5.000%, 10/01/18 - AMBAC Insured    10/07 at 101.00    AAA    2,628,875 
3,325    California Department of Water Resources, Power Supply Revenue Bonds, Series 2002A, 6.000%,    5/12 at 101.00    A2    3,871,963 
    5/01/14             
2,000    California State Public Works Board, Lease Revenue Refunding Bonds, Various University of    No Opt. Call    Aa2    2,262,880 
    California Projects, Series 1993A, 5.500%, 6/01/14             
500    California State Public Works Board, Lease Revenue Refunding Bonds, Community Colleges Projects,    12/08 at 101.00    A-    525,040 
    Series 1998A, 5.250%, 12/01/16             
500    Contra Costa Water District, California, Water Revenue Refunding Bonds, Series 1997H, 5.000%,    10/07 at 100.00    AA    521,105 
    10/01/17             
500    Contra Costa County, California, Certificates of Participation Refunding, Merrithew Memorial    11/07 at 102.00    AAA    536,045 
    Hospital Replacement Project, Series 1997, 5.375%, 11/01/17 - MBIA Insured             
3,000    Golden State Tobacco Securitization Corporation, California, Tobacco Settlement Asset-Backed Bonds,    6/13 at 100.00    BBB    3,379,380 
    Series 2003A-1, 6.750%, 6/01/39             
 
    Colorado - 8.6%             
    Colorado Health Facilities Authority, Revenue Bonds, Catholic Health Initiatives, Series 2002A:             
1,700    5.500%, 3/01/22    3/12 at 100.00    AA***    1,908,284 
1,300    5.500%, 3/01/22    3/12 at 100.00    AA    1,432,262 
1,555    Denver City and County, Colorado, Airport System Revenue Refunding Bonds, Series 2001, 5.500%,    11/11 at 100.00    AAA    1,727,030 
    11/15/16 - FGIC Insured             
5,000    Denver City and County, Colorado, Airport System Revenue Refunding Bonds, Series 2001A, 5.625%,    11/11 at 100.00    AAA    5,510,600 
    11/15/17 (Alternative Minimum Tax) - FGIC Insured             
3,185    Denver City and County, Colorado, Airport System Revenue Bonds, Series 1991D, 7.750%, 11/15/13    No Opt. Call    A    3,772,346 
    (Alternative Minimum Tax)             
3,000    Denver Convention Center Hotel Authority, Colorado, Senior Revenue Bonds, Convention Center Hotel,    12/13 at 100.00    AAA    3,180,630 
    Series 2003A, 5.000%, 12/01/23 - XLCA Insured             
    E-470 Public Highway Authority, Colorado, Senior Revenue Bonds, Series 2000B:             
5,000    0.000%, 9/01/24 - MBIA Insured    No Opt. Call    AAA    2,094,900 
5,000    0.000%, 9/01/28 (Pre-refunded to 9/01/10) - MBIA Insured    9/10 at 31.42    AAA    1,322,850 
250    Northwest Parkway Public Highway Authority, Colorado, Revenue Bonds, Senior Series 2001A, 5.250%,    6/11 at 102.00    AAA    268,612 
    6/15/41 - FSA Insured             
1,100    University of Colorado Hospital Authority, Revenue Bonds, Series 2001A, 5.600%, 11/15/31    11/11 at 100.00    A3    1,157,761 
 
    District of Columbia - 0.2%             
500    District of Columbia, Hospital Revenue Refunding Bonds, Medlantic Healthcare Group, Series 1996A,    8/06 at 102.00    AAA    526,410 
    5.750%, 8/15/16 - MBIA Insured             
 
    Florida - 2.6%             
6,060    JEA, Florida, St. John's River Power Park System Revenue Refunding Bonds, Issue Two, Series Nine,    10/05 at 100.00    Aa2    6,112,540 
    5.250%, 10/01/21             
625    Miami-Dade County Expressway Authority, Florida, Toll System Revenue Refunding Bonds, Series 2001,    7/11 at 101.00    Aaa    664,881 
    5.125%, 7/01/29 - FGIC Insured             
 
    Hawaii - 0.5%             
1,100    Hawaii, Certificates of Participation, Kapolei State Office Building, Series 1998A, 5.000%,    11/08 at 101.00    AAA    1,170,763 
    5/01/17 - AMBAC Insured             
 
    Illinois - 14.3%             
4,425    Chicago Metropolitan Housing Development Corporation, Illinois, FHA-Insured Section 8 Assisted    7/05 at 100.00    AA    4,432,124 
    Housing Development Revenue Refunding Bonds, Series 1992, 6.800%, 7/01/17             
2,400    Chicago, Illinois, Special Facility Revenue Refunding Bonds, O'Hare International Airport, United    No Opt. Call    N/R    396,840 
    Air Lines Inc. Project, Series 2001C, 6.300%, 5/01/16 #             
250    Illinois Development Finance Authority, Economic Development Revenue Bonds, Latin School of Chicago    8/08 at 100.00    Baa2    260,338 
    Project, Series 1998, 5.200%, 8/01/11             
2,185    Illinois Finance Authority, Revenue Bonds, YMCA of Southwest Illinois, Series 2005, 5.000%,    9/15 at 100.00    AA    2,262,393 
    9/01/31 - RAAI Insured             
3,000    Illinois Health Facilities Authority, Revenue Bonds, Rush-Presbyterian St. Luke's Medical Center    11/05 at 100.00    AAA    3,022,110 
    Obligated Group, Series 1993, 5.250%, 11/15/20 - MBIA Insured             
1,055    Illinois Health Facilities Authority, Revenue Bonds, Loyola University Health System, Series 2001A,    7/11 at 100.00    Baa1    1,132,838 
    6.125%, 7/01/31             
2,255    Illinois Health Facilities Authority, Revenue Bonds, Lake Forest Hospital, Series 2002A, 6.250%,    7/12 at 100.00    A-    2,519,196 
    7/01/22             
600    Illinois Educational Facilities Authority, Student Housing Revenue Bonds, Educational Advancement    5/12 at 101.00    Baa2    650,028 
    Foundation Fund, University Center Project, Series 2002, 6.000%, 5/01/22             
5,700    Illinois, Sales Tax Revenue Bonds, First Series 2002, 5.000%, 6/15/22    6/13 at 100.00    AAA    6,120,888 
45    Metropolitan Pier and Exposition Authority, Illinois, Revenue Bonds, McCormick Place Expansion    12/05 at 100.00    A1    45,102 
    Project, Series 1992A, 6.500%, 6/15/22             
7,000    Metropolitan Pier and Exposition Authority, Illinois, Revenue Refunding Bonds, McCormick Place    6/12 at 101.00    AAA    7,545,300 
    Expansion Project, Series 2002B, 5.000%, 6/15/21 - MBIA Insured             
5,045    Sauk Village, Illinois, General Obligation Alternate Revenue Source Bonds, Tax Increment, Series    12/12 at 100.00    AA    5,254,115 
    2002A, 5.000%, 6/01/22 - RAAI Insured             
    Sauk Village, Illinois, General Obligation Alternate Revenue Source Bonds, Tax Increment, Series             
    2002B:             
1,060    0.000%, 12/01/17 - RAAI Insured    No Opt. Call    AA    600,373 
1,135    0.000%, 12/01/18 - RAAI Insured    No Opt. Call    AA    609,279 
1,100    Schaumburg, Illinois, General Obligation Bonds, Series 2004B, 5.250%, 12/01/34 - FGIC Insured    12/14 at 100.00    AAA    1,202,025 
1,000    Yorkville, Illinois, General Obligation Debt Certificates, Series 2003, 5.000%, 12/15/21 - RAAI    12/11 at 100.00    AA    1,039,660 
    Insured             
 
    Indiana - 3.1%             
1,000    Franklin Community Multi-School Building Corporation, Marion County, Indiana, First Mortgage    7/14 at 100.00    AAA    1,070,140 
    Revenue Bonds, Series 2004, 5.000%, 7/15/22 - FGIC Insured             
4,380    Indiana Municipal Power Agency, Power Supply System Revenue Bonds, Series 2002A, 5.125%, 1/01/21 -    1/12 at 100.00    AAA    4,716,822 
    AMBAC Insured             
1,280    Indiana Housing Finance Authority, Single Family Mortgage Revenue Bonds, Series 2002C-2, 5.250%,    7/11 at 100.00    Aaa    1,330,355 
    7/01/23 (Alternative Minimum Tax)             
750    West Clark 2000 School Building Corporation, Clark County, Indiana, First Mortgage Bonds, Series    1/15 at 100.00    AAA    804,990 
    2005, 5.000%, 7/15/22 - MBIA Insured             
 
    Iowa - 1.8%             
    Iowa Tobacco Settlement Authority, Tobacco Settlement Asset-Backed Revenue Bonds, Series 2001B:             
1,000    5.300%, 6/01/25    6/11 at 101.00    BBB    1,020,250 
3,500    5.600%, 6/01/35    6/11 at 101.00    BBB    3,580,325 
 
    Louisiana - 2.1%             
2,125    Louisiana Public Facilities Authority, Revenue Bonds, Baton Rouge General Hospital, Series 2004,    7/14 at 100.00    AAA    2,294,150 
    5.250%, 7/01/24 - MBIA Insured             
3,000    Louisiana Public Facilities Authority, Revenue Bonds, Tulane University, Series 2002A, 5.125%,    7/12 at 100.00    AAA    3,198,120 
    7/01/27 - AMBAC Insured             
 
    Massachusetts - 2.2%             
3,000    Massachusetts Health and Educational Facilities Authority, Revenue Bonds, Berkshire Health System,    10/11 at 101.00    BBB+    3,223,830 
    Series 2001E, 6.250%, 10/01/31             
2,090    Massachusetts Water Resources Authority, General Revenue Bonds, Series 1993C, 5.250%, 12/01/15 -    No Opt. Call    AAA    2,363,665 
    MBIA Insured             
 
    Michigan - 2.0%             
2,900    Michigan State Hospital Finance Authority, Hospital Revenue Refunding Bonds, Trinity Health Credit    12/12 at 100.00    AA-    3,093,285 
    Group, Series 2002C, 5.375%, 12/01/30             
2,000    Plymouth-Canton Community School District, Wayne and Washtenaw Counties, Michigan, Unlimited Tax    5/09 at 100.00    AA    2,084,920 
    General Obligation School Building and Site Bonds, Series 1999, 4.750%, 5/01/18             
 
    Nevada - 7.1%             
500    Clark County, Nevada, Limited Tax General Obligation Las Vegas Convention and Visitors Authority    7/06 at 101.00    AAA    517,515 
    Bonds, Series 1996, 5.500%, 7/01/17 - MBIA Insured             
1,500    Clark County, Nevada, General Obligation Bank Bonds, Southern Nevada Water Authority Loan, Series    6/11 at 100.00    AAA    1,646,130 
    2001, 5.300%, 6/01/19 - FGIC Insured             
    Director of Nevada State Department of Business and Industry, Revenue Bonds, Las Vegas Monorail             
    Project, First Tier, Series 2000:             
4,595    0.000%, 1/01/22 - AMBAC Insured    No Opt. Call    AAA    2,179,914 
13,250    5.375%, 1/01/40 - AMBAC Insured    1/10 at 100.00    AAA    14,123,175 
 
    New Jersey - 1.0%             
2,500    New Jersey Health Care Facilities Financing Authority, Revenue Bonds, Somerset Medical Center,    7/13 at 100.00    Baa3    2,610,925 
    Series 2003, 5.500%, 7/01/23             
 
    New Mexico - 2.5%             
    University of New Mexico, FHA-Insured Mortgage Hospital Revenue Bonds, Series 2004:             
555    4.625%, 1/01/25 - FSA Insured    7/14 at 100.00    AAA    564,613 
660    4.625%, 7/01/25 - FSA Insured    7/14 at 100.00    AAA    671,431 
2,000    4.750%, 7/01/27 - FSA Insured    7/14 at 100.00    AAA    2,062,080 
3,000    4.750%, 1/01/28 - FSA Insured    7/14 at 100.00    AAA    3,086,340 
 
    New York - 4.9%             
2,000    New York City Municipal Water Finance Authority, New York, Water and Sewerage System Revenue Bonds,    12/14 at 100.00    AAA    2,141,540 
    Fiscal Series 2005B, 5.000%, 6/15/36 - FSA Insured             
2,700    Dormitory Authority of the State of New York, Revenue Bonds, Mount Sinai NYU Health Obligated    7/10 at 101.00    Ba1    2,878,659 
    Group, Series 2000A, 6.500%, 7/01/17             
3,000    New York State Tobacco Settlement Financing Corporation, Tobacco Settlement Asset-Backed and State    6/11 at 100.00    AA-    3,335,970 
    Contingency Contract-Backed Bonds, Series 2003B-1C, 5.500%, 6/01/16             
3,810    Triborough Bridge and Tunnel Authority, New York, Convention Center Bonds, Series 1990E, 7.250%,    No Opt. Call    AA-    4,215,460 
    1/01/10             
 
    North Carolina - 0.6%             
1,500    Charlotte-Mecklenburg Hospital Authority, North Carolina, Healthcare System Revenue Bonds,    1/11 at 101.00    AA    1,561,890 
    Carolinas Healthcare System, Series 2001A, 5.000%, 1/15/31             
 
    Ohio - 1.1%             
2,800    Cuyahoga County, Ohio, Hospital Revenue Bonds, Cleveland Clinic Foundation - Meridia Health System,    8/05 at 102.00    AAA    2,868,740 
    Series 1995, 6.250%, 8/15/14 (Pre-refunded to 8/15/05)             
 
    Pennsylvania - 2.7%             
1,020    Carlisle Area School District, Cumberland County, Pennsylvania, General Obligation Bonds, Series    9/09 at 100.00    Aaa    1,080,047 
    2004A, 5.000%, 9/01/20 - FGIC Insured             
1,000    Dauphin County General Authority, Pennsylvania, Health System Revenue Bonds, Pinnacle Health System    2/09 at 101.00    AAA    1,066,650 
    Project, Series 1999, 5.125%, 8/15/17 - MBIA Insured             
1,000    Philadelphia Authority for Industrial Development, Pennsylvania, Airport Revenue Bonds,    7/11 at 101.00    AAA    1,100,440 
    Philadelphia Airport System Project, Series 2001A, 5.500%, 7/01/17 (Alternative Minimum Tax) -             
    FGIC Insured             
3,250    Philadelphia School District, Pennsylvania, General Obligation Bonds, Series 2002A, 5.500%,    2/12 at 100.00    AAA    3,680,723 
    2/01/31 (Pre-refunded to 2/01/12) - FSA Insured             
 
    Puerto Rico - 1.2%             
3,000    Puerto Rico Housing Finance Authority, Capital Fund Program Revenue Bonds, Series 2003, 5.000%,    12/13 at 100.00    AA***    3,220,320 
    12/01/20             
 
    Rhode Island - 2.0%             
5,000    Rhode Island Tobacco Settlement Financing Corporation, Tobacco Settlement Asset-Backed Bonds,    6/12 at 100.00    BBB    5,268,950 
    Series 2002A, 6.250%, 6/01/42             
 
    South Carolina - 6.5%             
620    Florence, South Carolina, Water and Sewer Revenue Bonds, Series 2000, 5.750%, 3/01/20 - AMBAC    3/10 at 101.00    AAA    688,820 
    Insured             
4,000    Greenville County School District, South Carolina, Installment Purchase Revenue Bonds, Series 2002,    12/12 at 101.00    AA-***    4,696,120 
    5.875%, 12/01/19 (Pre-refunded to 12/01/12)             
2,500    Lexington County Health Service District, South Carolina, Hospital Revenue Refunding and    11/13 at 100.00    A    2,822,400 
    Improvement Bonds, Series 2003, 6.000%, 11/01/18             
8,350    South Carolina Public Service Authority, Revenue Refunding Bonds, Santee Cooper Electric System,    1/06 at 102.00    AAA    8,637,240 
    Series 1996A, 5.750%, 1/01/22 - MBIA Insured             
 
    South Dakota - 0.4%             
1,000    South Dakota Health and Educational Facilities Authority, Revenue Bonds, Sioux Valley Hospital and    11/14 at 100.00    A+    1,060,430 
    Health System, Series 2004A, 5.250%, 11/01/34             
 
    Texas - 14.9%             
 
4,000    Brazos River Harbor Navigation District, Brazoria County, Texas, Environmental Facilities Revenue    5/12 at 101.00    A-    4,370,960 
    Bonds, Dow Chemical Company Project, Series 2002A-6, 6.250%, 5/15/33 (Alternative Minimum Tax)             
    (Mandatory put 5/15/17)             
1,500    Central Texas Regional Mobility Authority, Travis and Williamson Counties, Toll Road Revenue Bonds,    1/15 at 100.00    AAA    1,571,070 
    Series 2005, 5.000%, 1/01/45 - FGIC Insured             
1,270    Cleveland Housing Corporation, Texas, FHA-Insured Section 8 Assisted Mortgage Revenue Refunding    7/05 at 100.00    AAA    1,272,248 
    Bonds, Series 1992C, 7.375%, 7/01/24 - MBIA Insured             
4,550    Harris County-Houston Sports Authority, Texas, Junior Lien Revenue Bonds, Series 2001H, 0.000%,    11/31 at 53.78    AAA    674,993 
    11/15/41 - MBIA Insured             
2,500    Harris County Health Facilities Development Corporation, Texas, Hospital Revenue Bonds, Texas    10/05 at 102.00    AAA    2,844,250 
    Children's Hospital, Series 1995, 5.500%, 10/01/16 - MBIA Insured             
3,000    Harris County Health Facilities Development Corporation, Texas, Thermal Utility Revenue Bonds, TECO    11/13 at 100.00    AAA    3,159,180 
    Project, Series 2003, 5.000%, 11/15/30 - MBIA Insured             
2,000    Houston, Texas, Subordinate Lien Airport System Revenue Bonds, Series 2002A, 5.625%, 7/01/20    7/12 at 100.00    AAA    2,212,860 
    (Alternative Minimum Tax) - FSA Insured             
3,125    Katy Independent School District, Harris, Fort Bend and Waller Counties, Texas, General Obligation    2/12 at 100.00    AAA    3,265,375 
    Bonds, Series 2002A, 5.000%, 2/15/32             
    Killeen Independent School District, Bell County, Texas, General Obligation Bonds, Series 1998:             
780    5.000%, 2/15/14 (Pre-refunded to 2/15/08)    2/08 at 100.00    AAA    822,705 
220    5.000%, 2/15/14    2/08 at 100.00    AAA    230,793 
1,000    Lewisville Independent School District, Denton County, Texas, General Obligation Bonds, Series    8/11 at 100.00    AAA    1,065,150 
    2004, 5.000%, 8/15/23             
4,750    Sam Rayburn Municipal Power Agency, Texas, Power Supply System Revenue Refunding Bonds, Series    10/12 at 100.00    AA    5,185,053 
    2002A, 5.500%, 10/01/17 - RAAI Insured             
1,000    Texas, General Obligation Bonds, Water Financial Assistance Program, Series 2003A, 5.125%, 8/01/42    8/13 at 100.00    Aa1    1,042,210 
    (Alternative Minimum Tax)             
8,900    Texas Turnpike Authority, Dallas North Tollway System Revenue Bonds, President George Bush    1/06 at 102.00    AAA    9,170,471 
    Turnpike, Series 1995, 5.250%, 1/01/23 - FGIC Insured             
1,250    Texas Water Development Board, Senior Lien State Revolving Fund Revenue Bonds, Series 1996B,    1/07 at 100.00    AAA    1,287,262 
    5.125%, 7/15/18             
 
    Utah - 0.6%             
1,435    Salt Lake City and Sandy Metropolitan Water District, Utah, Water Revenue Bonds, Series 2004,    7/14 at 100.00    Aaa    1,553,316 
    5.000%, 7/01/21 - AMBAC Insured             
 
    Vermont - 2.6%             
3,000    Vermont Housing Finance Agency, Multifamily Housing Bonds, Series 1999C, 5.800%, 8/15/16 - FSA    2/09 at 100.00    AAA    3,138,720 
    Insured             
3,600    Vermont Industrial Development Authority, Industrial Development Revenue Refunding Bonds, Stanley    9/05 at 100.00    A    3,606,732 
    Works Inc. Project, Series 1992, 6.750%, 9/01/10             
 
    Virginia - 0.5%             
250    Norfolk, Virginia, Water Revenue Bonds, Series 1995, 5.750%, 11/01/13 - MBIA Insured    11/05 at 102.00    AAA    257,565 
1,000    Virginia Transportation Board, Transportation Revenue Refunding Bonds, U.S. Route 58 Corridor    5/07 at 101.00    AA+    1,047,700 
    Development Program, Series 1997C, 5.125%, 5/15/19             
 
    Washington - 3.6%             
2,000    Washington State Healthcare Facilities Authority, Revenue Bonds, Catholic Health Initiatives,    12/07 at 101.00    AAA    2,109,720 
    Series 1997A, 5.125%, 12/01/17 - MBIA Insured             
6,715    Washington State Healthcare Facilities Authority, Revenue Bonds, Sisters of Providence Health    10/11 at 100.00    AAA    7,186,392 
    System, Series 2001A, 5.125%, 10/01/17 - MBIA Insured             
 
    Wisconsin - 2.0%             
4,000    Wisconsin Housing and Economic Development Authority, Home Ownership Revenue Bonds, Series 2002G,    3/12 at 100.00    AA    4,155,320 
    4.850%, 9/01/17             
1,000    Wisconsin Health and Educational Facilities Authority, Revenue Bonds, Wheaton Franciscan Services    8/13 at 100.00    A    1,091,460 
    Inc., Series 2003A, 5.500%, 8/15/18             

$ 255,935        Total Long-Term Investments (cost $242,355,143) - 98.8%    255,538,515 
 
        Other Assets Less Liabilities - 1.2%    3,185,535 
 
        Net Assets - 100%    $258,724,050 
 
 
 
    *    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.     
    **    Ratings: Using the higher of Standard & Poor's or Moody's rating.     
    ***    Securities are backed by an escrow or trust containing sufficient U.S. Government or U.S. Government agency     
        securities which ensures the timely payment of principal and interest. Such securities are normally considered     
        to be equivalent to AAA rated securities.     
    #    On December 9 2002, UAL Corporation, the holdong company of United Air Lines, Inc filed for federal bankruptcy     
        protection. The Adviser determined that it was likely United would not remain current on their interest payment     
        obligations with respect to these bonds and thus has stopped accruing interest.     
    N/R    Investment is not rated.     
 
        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 income on taxable market     
        discount securities and timing differences in recognizing certain gains and losses on investment transactions.     
 
        At June 30, 2005, the cost of investments was $242,270,204.     
 
        Gross unrealized appreciation and gross unrealized depreciation of investments at June 30, 2005, were as     
        follows:     
        Gross unrealized:     
           Appreciation    $15,280,404 
           Depreciation    (2,012,093) 
        Net unrealized appreciation of investments    $13,268,311 

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: 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 Select Tax-Free Income Portfolio 2        

By (Signature and Title)*          /s/ Jessica R. Droeger--Vice President and Secretary        

Date         08/26/05        

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--Chief Administrative Officer (principal executive officer)        

Date         08/26/05        

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

Date         08/26/05        

* Print the name and title of each signing officer under his or her signature.