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         811-21157         

        Nuveen Arizona Dividend Advantage Municipal Fund 3         
(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:            7/31          

Date of reporting period:         4/30/07         

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 Arizona Dividend Advantage Municipal Fund 3 (NXE)             
    April 30, 2007             
Principal        Optional Call         
Amount (000)    Description (1)    Provisions (2)    Ratings (3)    Value 
    Consumer Staples – 1.3% (0.8% of Total Investments)             
$             555    Puerto Rico, The Children’s Trust Fund, Tobacco Settlement Asset-Backed Refunding Bonds,    5/12 at 100.00    BBB   $   581,213 
     Series 2002, 5.375%, 5/15/33             
    Education and Civic Organizations – 13.6% (9.0% of Total Investments)             
1,250    Arizona State University, System Revenue Bonds, Series 2005, 5.000%, 7/01/20 – AMBAC Insured    7/15 at 100.00    AAA    1,336,313 
1,130    Energy Management Services LLC, Arizona State University, Energy Conservation Revenue Bonds,    7/12 at 100.00    AAA    1,207,010 
     Main Campus Project, Series 2002, 5.250%, 7/01/18 – MBIA Insured             
270    Glendale Industrial Development Authority, Arizona, Revenue Bonds, Midwestern University,    5/08 at 101.00    A–    275,670 
     Series 1998A, 5.375%, 5/15/28             
540    Pima County Industrial Development Authority, Arizona, Charter School Revenue Bonds, Noah    12/14 at 100.00    BBB–    572,621 
     Webster Basic Schools Inc., Series 2004, 6.000%, 12/15/24             
565    Tucson Industrial Development Authority, Arizona, Charter School Revenue Bonds, Arizona    9/14 at 100.00    BBB–    593,855 
     Agribusiness and Equine Center Charter School, Series 2004A, 6.125%, 9/01/34             
2,000    University of Arizona, Certificates of Participation, Series 2002B, 5.125%, 6/01/20 –    6/12 at 100.00    AAA    2,116,220 
     AMBAC Insured             
5,755    Total Education and Civic Organizations            6,101,689 
    Health Care – 19.0% (12.5% of Total Investments)             
625    Arizona Health Facilities Authority, Revenue Bonds, Blood Systems Inc., Series 2004,    4/14 at 100.00    A–    642,075 
     5.000%, 4/01/20             
475    Glendale Industrial Development Authority, Arizona, Revenue Bonds, John C. Lincoln Health    12/15 at 100.00    BBB    482,401 
     Network, Series 2005B, 5.000%, 12/01/37             
590    Glendale Industrial Development Authority, Arizona, Revenue Bonds, John C. Lincoln Health    12/17 at 100.00    BBB    599,629 
     Network, Series 2007, 5.000%, 12/01/42             
390    Maricopa County Industrial Development Authority, Arizona, Health Facilities Revenue Bonds,    5/16 at 100.00    AA    407,144 
     Mayo Clinic, Series 2006, 5.000%, 11/15/36             
1,825    Maricopa County Industrial Development Authority, Arizona, Health Facility Revenue Bonds,    7/14 at 100.00    A    1,920,101 
     Catholic Healthcare West, Series 2004A, 5.375%, 7/01/23             
985    Maricopa County Industrial Development Authority, Arizona, Health Facility Revenue Bonds,    7/17 at 100.00    A    1,039,746 
     Catholic Healthcare West, Series 2007A, 5.250%, 7/01/32             
2,000    Maricopa County Industrial Development Authority, Arizona, Hospital Revenue Bonds, Mayo Clinic    5/08 at 101.00    AA    2,044,620 
     Hospital, Series 1998, 5.250%, 11/15/37             
270    Maricopa County, Arizona, Hospital Revenue Bonds, Sun Health Corporation, Series 2005,    4/15 at 100.00    Baa1    281,000 
     5.000%, 4/01/16             
1,000    Yavapai County Industrial Development Authority, Arizona, Hospital Revenue Bonds, Yavapai    8/13 at 100.00    Baa2    1,082,300 
     Regional Medical Center, Series 2003A, 6.000%, 8/01/33             
8,160    Total Health Care            8,499,016 
    Housing/Multifamily – 4.5% (3.0% of Total Investments)             
1,545    Phoenix Industrial Development Authority, Arizona, GNMA Collateralized Multifamily Housing    6/11 at 102.00    Aaa    1,619,484 
     Revenue Bonds, Campaigne Place on Jackson, Series 2001, 5.600%, 6/20/21 (Alternative             
     Minimum Tax)             
380    Phoenix Industrial Development Authority, Arizona, GNMA Collateralized Multifamily Housing    4/15 at 100.00    Aaa    385,347 
     Revenue Bonds, Park Lee Apartments, Series 2004A, 5.050%, 10/20/44 (Alternative Minimum Tax)             
1,925    Total Housing/Multifamily            2,004,831 
    Housing/Single Family – 2.7% (1.8% of Total Investments)             
1,175    The Industrial Development Authority of The City of Tucson, Arizona, Tax-Exempt Single Family    1/17 at 103.00    Aaa    1,220,543 
     Mortgage Revenue Bonds, Series 2007A-1, 5.100%, 7/01/38             
    Industrials – 2.1% (1.4% of Total Investments)             
945    Yavapai County Industrial Development Authority, Arizona, Solid Waste Disposal Revenue Bonds,    No Opt. Call    BBB    946,181 
     Waste Management Inc., Series 2003B, 4.450%, 3/01/28 (Mandatory put 3/01/08) (Alternative             
     Minimum Tax)             
    Tax Obligation/General – 3.3% (2.2% of Total Investments)             
660    Chandler, Arizona, General Obligation Bonds, Series 2002, 5.000%, 7/01/18    7/12 at 100.00    AAA    696,346 
730    Glendale, Arizona, General Obligation Refunding Bonds, Series 2002, 5.000%, 7/01/19    7/11 at 100.00    AA    763,303 
1,390    Total Tax Obligation/General            1,459,649 
    Tax Obligation/Limited – 38.3% (25.3% of Total Investments)             
2,000    Arizona State Transportation Board, Highway Revenue Refunding Bonds, Series 2002A,    7/12 at 102.00    AAA    2,173,180 
     5.250%, 7/01/18             
158    Centerra Community Facilities District, Goodyear, Arizona, General Obligation Bonds, Series    7/15 at 100.00    N/R    163,092 
     2005, 5.500%, 7/15/29             
2,250    DC Ranch Community Facilities District, Scottsdale, Arizona, General Obligation Bonds, Series    7/13 at 100.00    Aaa    2,354,850 
     2002, 5.000%, 7/15/27 – AMBAC Insured             
341    Estrella Mountain Ranch Community Facilities District, Goodyear, Arizona, Special Assessment    7/10 at 102.00    N/R    375,731 
     Lien Bonds, Series 2001A, 7.875%, 7/01/25             
800    Goodyear Community Facilities Utility District 1, Arizona, General Obligation Bonds, Series    7/13 at 100.00    A    839,864 
     2003, 5.350%, 7/15/28 – ACA Insured             
525    Greater Arizona Development Authority, Infrastructure Revenue Bonds, Series 2006A, 5.000%,    8/16 at 100.00    AAA    560,422 
     8/01/23 – MBIA Insured             
785    Marana, Arizona, Tangerine Farms Road Improvement District Revenue Bonds, Series 2006,    7/16 at 100.00    Baa1    781,836 
     4.600%, 1/01/26             
2,000    Mohave County, Arizona, Certificates of Participation, Series 2004, 5.250%, 7/01/19 –    7/14 at 100.00    AAA    2,168,640 
     AMBAC Insured             
640    Palm Valley Community Facility District 3, Goodyear, Arizona, General Obligation Bonds, Series    7/16 at 100.00    N/R    656,877 
     2006, 5.300%, 7/15/31             
160    Parkway Community Facilities District 1, Prescott Valley, Arizona, General Obligation Bonds,    7/16 at 100.00    N/R    163,664 
     Series 2006, 5.350%, 7/15/31             
1,250    Pinal County Industrial Development Authority, Arizona, Correctional Facilities Contract    No Opt. Call    A    1,293,688 
     Revenue Bonds, Florence West Prison LLC, Series 2002A, 5.000%, 10/01/18 – ACA Insured             
136    Puerto Rico Infrastructure Financing Authority, Special Tax Revenue Bonds, Residual Series 1534,    No Opt. Call    AAA    135,657 
     0.000%, 7/01/43 – AMBAC Insured (IF)             
8,470    Puerto Rico Infrastructure Financing Authority, Special Tax Revenue Bonds, Series 2005A,    No Opt. Call    AAA    1,775,736 
     0.000%, 7/01/42 – FGIC Insured (UB)             
1,130    San Luis Civic Improvement Corporation, Arizona, Municipal Facilities Excise Tax Revenue    7/15 at 100.00    AAA    1,196,308 
     Bonds, Series 2005, 5.000%, 7/01/25 – XLCA Insured             
1,250    Vistancia Community Facilities District, Arizona, Restricted General Obligation Bonds, Series    7/15 at 100.00    Baa1    1,365,113 
     2005, 5.750%, 7/15/24             
665    Watson Road Community Facilities District, Arizona, Special Assessment Revenue Bonds, Series    7/16 at 100.00    N/R    703,603 
     2005, 6.000%, 7/01/30             
425    Westpark Community Facilities District, Buckeye, Arizona, General Obligation Tax Increment    7/16 at 100.00    N/R    431,634 
     Bonds Series 2006, 5.250%, 7/15/31             
22,985    Total Tax Obligation/Limited            17,139,895 
    Transportation – 13.4% (8.9% of Total Investments)             
    Phoenix, Arizona, Civic Improvement Corporation, Senior Lien Airport Revenue Bonds,             
    Series 2002B:             
1,000     5.750%, 7/01/16 – FGIC Insured (Alternative Minimum Tax)    7/12 at 100.00    AAA    1,082,630 
2,300     5.250%, 7/01/21 – FGIC Insured (Alternative Minimum Tax)    7/12 at 100.00    AAA    2,402,350 
2,450    Tucson Airport Authority Inc., Arizona, Revenue Refunding Bonds, Series 2001B, 5.000%,    6/11 at 100.00    AAA    2,517,253 
     6/01/20 – AMBAC Insured (Alternative Minimum Tax)             
5,750    Total Transportation            6,002,233 
    U.S. Guaranteed – 28.0% (18.5% of Total Investments) (4)             
300    Arizona Health Facilities Authority, Hospital Revenue Bonds, Catholic Healthcare West, Series    7/10 at 101.00    A (4)    327,960 
     1999A, 6.625%, 7/01/20 (Pre-refunded 7/01/10)             
1,000    Arizona Health Facilities Authority, Hospital System Revenue Bonds, John C. Lincoln Health    12/10 at 102.00    BBB (4)    1,121,050 
     Network, Series 2000, 6.875%, 12/01/20 (Pre-refunded 12/01/10)             
    Arizona Health Facilities Authority, Hospital System Revenue Bonds, Phoenix Children’s             
    Hospital, Series 1999A:             
350     6.125%, 11/15/22 (Pre-refunded 11/15/09)    11/09 at 100.00    Baa3 (4)    370,272 
520     6.250%, 11/15/29 (Pre-refunded 11/15/09)    11/09 at 100.00    Baa3 (4)    551,678 
260    Arizona State University, System Revenue Bonds, Series 2002, 5.750%, 7/01/27 (Pre-refunded    7/12 at 100.00    AAA    285,046 
     7/01/12) – FGIC Insured             
2,660    Arizona Tourism and Sports Authority, Tax Revenue Bonds, Multipurpose Stadium Facility    7/13 at 100.00    Aaa    2,901,315 
     Project, Series 2003A, 5.375%, 7/01/20 (Pre-refunded 7/01/13) – MBIA Insured             
445    Maricopa County Union High School District 210 Phoenix, Arizona, General Obligation Bonds,    7/16 at 100.00    AAA    485,815 
     Series 2006C, 5.000%, 7/01/24 (Pre-refunded 7/01/16) – MBIA Insured             
1,575    Maricopa County Union High School District 210, Phoenix, Arizona, General Obligation Bonds,    7/14 at 100.00    AAA    1,698,197 
     Series 2004A, 5.000%, 7/01/20 (Pre-refunded 7/01/14) – FSA Insured             
1,250    Scottsdale Industrial Development Authority, Arizona, Hospital Revenue Bonds, Scottsdale    12/11 at 101.00    A3 (4)    1,366,163 
     Healthcare, Series 2001, 5.800%, 12/01/31 (Pre-refunded 12/01/11)             
2,770    Tempe, Arizona, Excise Tax Revenue Refunding Bonds, Series 2003, 5.000%, 7/01/22    7/13 at 100.00    AAA    2,964,505 
     (Pre-refunded 7/01/13)             
440    Tucson, Arizona, General Obligation Bonds, Series 2001B, 5.000%, 7/01/20 (Pre-refunded 7/01/11)    7/11 at 100.00    AA (4)    462,150 
11,570    Total U.S. Guaranteed            12,534,151 
    Utilities – 12.0% (7.9% of Total Investments)             
1,250    Maricopa County Pollution Control Corporation, Arizona, Revenue Bonds, Arizona Public Service    11/12 at 100.00    AAA    1,308,975 
     Company – Palo Verde Project, Series 2002A, 5.050%, 5/01/29 – AMBAC Insured             
    Puerto Rico Electric Power Authority, Power Revenue Bonds, Series 2005RR:             
1,660     5.000%, 7/01/26 – XLCA Insured    7/15 at 100.00    AAA    1,757,409 
935     5.000%, 7/01/27 – XLCA Insured    7/15 at 100.00    AAA    989,202 
    Salt River Project Agricultural Improvement and Power District, Arizona, Electric System             
    Revenue Bonds, Series 2002B:             
270     5.000%, 1/01/22    1/13 at 100.00    Aa1    282,863 
1,000     5.000%, 1/01/31    1/13 at 100.00    Aa1    1,041,980 
5,115    Total Utilities            5,380,429 
    Water and Sewer – 13.1% (8.7% of Total Investments)             
405    Oro Valley Municipal Property Corporation, Arizona, Senior Lien Water Revenue Bonds, Series    7/13 at 100.00    AAA    425,797 
     2003, 5.000%, 7/01/23 – MBIA Insured             
380    Phoenix Civic Improvement Corporation, Arizona, Junior Lien Wastewater System Revenue Bonds,    7/14 at 100.00    AAA    401,402 
     Series 2004, 5.000%, 7/01/24 – MBIA Insured             
1,000    Phoenix Civic Improvement Corporation, Arizona, Junior Lien Wastewater System Revenue    7/11 at 100.00    AAA    1,050,790 
     Refunding Bonds, Series 2001, 5.125%, 7/01/21 – FGIC Insured             
2,000    Phoenix Civic Improvement Corporation, Arizona, Junior Lien Water System Revenue Bonds, Series    7/12 at 100.00    AAA    2,110,140 
     2002, 5.000%, 7/01/18 – FGIC Insured             
920    Phoenix Civic Improvement Corporation, Arizona, Junior Lien Water System Revenue Bonds, Series    7/15 at 100.00    AAA    979,239 
     2005, 5.000%, 7/01/23 – MBIA Insured             
    Surprise Municipal Property Corporation, Arizona, Wastewater System Revenue Bonds, Series 2007:             
425     4.700%, 4/01/22 (WI/DD, Settling 5/15/07)    4/14 at 100.00    N/R    426,730 
490     4.900%, 4/01/32 (WI/DD, Settling 5/15/07)    4/17 at 100.00    N/R    492,391 
5,620    Total Water and Sewer            5,886,489 
$        70,945    Total Investments (cost $65,523,086) – 151.3%            67,756,319 
    Floating Rate Obligations – (2.6)%            (1,185,379) 
    Other Assets Less Liabilities – 0.4%            202,727 
    Preferred Shares, at Liquidation Value – (49.1)%            (22,000,000) 
    Net Assets Applicable to Common Shares – 100%           $   44,773,667 

(1)    All percentages shown in the Portfolio of Investments are based on net assets applicable to Common 
    shares unless otherwise noted. 
(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 or Moody’s rating. Ratings below BBB by Standard & 
    Poor’s Group or Baa by Moody’s Investor Service, Inc. are considered to be below investment grade. 
(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. 
WI/DD    Purchased on a when-issued or delayed delivery basis. 
(UB)    Underlying bond of an inverse floating rate trust reflected as a financing transaction pursuant to the 
    provisions of SFAS No. 140. 
(IF)    Inverse floating rate investment. 

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 the treatment of paydown gains and losses, 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.

At April 30, 2007, the cost of investments was $64,397,143.

Gross unrealized appreciation and gross unrealized depreciation of investments at April 30, 2007, were as follows:

Gross unrealized:     
  Appreciation    $2,240,853 
  Depreciation    (64,559) 
Net unrealized appreciation (depreciation) of investments    $2,176,294 

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 Arizona Dividend Advantage Municipal Fund 3        

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

Date         June 29, 2007        

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         June 29, 2007        

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

Date        June 29, 2007        

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