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:         10/31/07         

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)             
    October 31, 2007             
Principal        Optional Call         
Amount (000)    Description (1)    Provisions (2)    Ratings (3)    Value 
    Consumer Staples – 1.3% (0.9% of Total Investments)             
$             550    Puerto Rico, The Children’s Trust Fund, Tobacco Settlement Asset-Backed Refunding Bonds,    5/12 at 100.00    BBB   $   549,984 
     Series 2002, 5.375%, 5/15/33             
    Education and Civic Organizations – 13.9% (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    1,323,813 
1,130    Energy Management Services LLC, Arizona State University, Energy Conservation Revenue Bonds,    7/12 at 100.00    AAA    1,198,659 
     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–    273,486 
     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–    560,687 
     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–    584,673 
     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    2,104,000 
     AMBAC Insured             
5,755    Total Education and Civic Organizations            6,045,318 
    Health Care – 24.2% (15.6% of Total Investments)             
1,015    Arizona Health Facilities Authority, Hospital Revenue Bonds, Banner Health Systems, Series    1/17 at 100.00    AA–    1,038,538 
     2007A, 5.000%, 1/01/25             
625    Arizona Health Facilities Authority, Revenue Bonds, Blood Systems Inc., Series 2004,    4/14 at 100.00    A–    635,950 
     5.000%, 4/01/20             
475    Glendale Industrial Development Authority, Arizona, Revenue Bonds, John C. Lincoln Health    12/15 at 100.00    BBB    449,911 
     Network, Series 2005B, 5.000%, 12/01/37             
785    Glendale Industrial Development Authority, Arizona, Revenue Bonds, John C. Lincoln Health    12/17 at 100.00    BBB    732,170 
     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    396,361 
     Mayo Clinic, Series 2006, 5.000%, 11/15/36             
2,000    Maricopa County Industrial Development Authority, Arizona, Hospital Revenue Bonds, Mayo Clinic    5/08 at 101.00    AA    2,032,420 
     Hospital, Series 1998, 5.250%, 11/15/37             
1,825    Maricopa County Industrial Development Authority, Arizona, Health Facility Revenue    7/17 at 100.00    A    1,893,091 
     Bonds, Catholic Healthcare West, Series 2004A, 5.375%, 7/01/23 (UB)             
1,985    Maricopa County Industrial Development Authority, Arizona, Health Facility Revenue    7/14 at 100.00    A    2,027,122 
     Bonds, Catholic Healthcare West, Series 2007A, 5.250%, 7/01/32 (UB)             
270    Maricopa County, Arizona, Hospital Revenue Bonds, Sun Health Corporation, Series 2005,    4/15 at 100.00    Baa1    275,775 
     5.000%, 4/01/16             
1,000    Yavapai County Industrial Development Authority, Arizona, Hospital Revenue Bonds, Yavapai    8/13 at 100.00    Baa2    1,041,490 
     Regional Medical Center, Series 2003A, 6.000%, 8/01/33             
10,370    Total Health Care            10,522,828 
    Housing/Multifamily – 4.5% (2.9% of Total Investments)             
1,545    Phoenix Industrial Development Authority, Arizona, GNMA Collateralized Multifamily Housing    6/11 at 102.00    Aaa    1,593,992 
     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    372,202 
     Revenue Bonds, Park Lee Apartments, Series 2004A, 5.050%, 10/20/44 (Alternative Minimum Tax)             
1,925    Total Housing/Multifamily            1,966,194 
    Housing/Single Family – 7.9% (5.1% 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    1,205,574 
     Mortgage Revenue Bonds, Series 2007A-1, 5.100%, 7/01/38             
2,130    Tucson and Pima County Industrial Development Authority, Arizona, Single Family Mortgage    6/17 at 101.00    Aaa    2,239,226 
     Revenue Bonds, Series 2007B, 5.350%, 6/01/47 (Alternative Minimum Tax)             
3,305    Total Housing/Single Family            3,444,800 
    Tax Obligation/Limited – 35.7% (23.1% of Total Investments)             
1,000    Arizona State Transportation Board, Highway Revenue Refunding Bonds, Series 2002A,    7/12 at 102.00    AAA    1,079,320 
     5.250%, 7/01/18             
154    Centerra Community Facilities District, Goodyear, Arizona, General Obligation Bonds, Series    7/15 at 100.00    N/R    145,690 
     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    2,329,492 
     2002, 5.000%, 7/15/27 – AMBAC Insured             
    Estrella Mountain Ranch Community Facilities District, Arizona, Special Assessment Bonds,             
    Montecito Assessment District, Series 2007:             
255     5.700%, 7/01/27    1/17 at 100.00    N/R    249,987 
155     5.800%, 7/01/32    1/17 at 100.00    N/R    153,084 
326    Estrella Mountain Ranch Community Facilities District, Goodyear, Arizona, Special Assessment    7/10 at 102.00    N/R    349,221 
     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    811,784 
     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    552,899 
     8/01/23 – MBIA Insured             
785    Marana, Arizona, Tangerine Farms Road Improvement District Revenue Bonds, Series 2006,    7/16 at 100.00    Baa1    750,468 
     4.600%, 1/01/26             
290    Marley Park Communty Facilities District, City of Surprise, Arizona, Limited Tax General    7/17 at 100.00    N/R    292,355 
     Obligation Bonds, Series 2007, 6.100%, 7/15/32             
2,000    Mohave County, Arizona, Certificates of Participation, Series 2004, 5.250%, 7/01/19 –    7/14 at 100.00    AAA    2,147,340 
     AMBAC Insured             
640    Palm Valley Community Facility District 3, Goodyear, Arizona, General Obligation Bonds, Series    7/16 at 100.00    N/R    644,698 
     2006, 5.300%, 7/15/31             
425    Palm Valley Community Facility District 3, Goodyear, Arizona, Limited Tax General Obligation    7/17 at 100.00    N/R    417,027 
     Bonds, Series 2007, 5.800%, 7/15/32             
160    Parkway Community Facilities District 1, Prescott Valley, Arizona, General Obligation Bonds,    7/16 at 100.00    N/R    147,584 
     Series 2006, 5.350%, 7/15/31             
1,250    Pinal County Industrial Development Authority, Arizona, Correctional Facilities Contract    No Opt. Call    A    1,259,963 
     Revenue Bonds, Florence West Prison LLC, Series 2002A, 5.000%, 10/01/18 – ACA Insured             
1,130    San Luis Civic Improvement Corporation, Arizona, Municipal Facilities Excise Tax Revenue    7/15 at 100.00    AAA    1,177,754 
     Bonds, Series 2005, 5.000%, 7/01/25 – XLCA Insured             
665    Tartesso West Community Facility District, Buckeye, Arizona, Limited Tax General Obligation    7/17 at 100.00    N/R    661,083 
     Bonds, Series 2007, 5.900%, 7/15/32             
1,250    Vistancia Community Facilities District, Arizona, Restricted General Obligation Bonds, Series    7/15 at 100.00    Baa1    1,303,963 
     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    668,278 
     2005, 6.000%, 7/01/30             
425    Westpark Community Facilities District, Buckeye, Arizona, General Obligation Tax Increment    7/16 at 100.00    N/R    391,718 
     Bonds Series 2006, 5.250%, 7/15/31             
15,150    Total Tax Obligation/Limited            15,533,708 
    Transportation – 13.7% (8.8% 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    1,077,290 
2,300     5.250%, 7/01/21 – FGIC Insured (Alternative Minimum Tax)    7/12 at 100.00    Aaa    2,376,612 
2,450    Tucson Airport Authority Inc., Arizona, Revenue Refunding Bonds, Series 2001B, 5.000%,    6/11 at 100.00    AAA    2,493,266 
     6/01/20 – AMBAC Insured (Alternative Minimum Tax)             
5,750    Total Transportation            5,947,168 
    U.S. Guaranteed – 28.6% (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)    326,427 
     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)    1,116,080 
     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)    368,169 
520     6.250%, 11/15/29 (Pre-refunded 11/15/09)    11/09 at 100.00    Baa3 (4)    548,262 
2,660    Arizona Tourism and Sports Authority, Tax Revenue Bonds, Multipurpose Stadium Facility    7/13 at 100.00    Aaa    2,904,932 
     Project, Series 2003A, 5.375%, 7/01/20 (Pre-refunded 7/01/13) – MBIA Insured             
660    Chandler, Arizona, General Obligation Bonds, Series 2002, 5.000%, 7/01/18    7/12 at 100.00    AAA    702,108 
     (Pre-refunded 7/01/12)             
1,575    Maricopa County Union High School District 210, Phoenix, Arizona, General Obligation Bonds,    7/14 at 100.00    AAA    1,703,126 
     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)    1,366,575 
     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    2,972,180 
     (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)    462,585 
11,525    Total U.S. Guaranteed            12,470,444 
    Utilities – 12.5% (8.1% of Total Investments)             
1,250    Maricopa County Pollution Control Corporation, Arizona, Revenue Bonds, Arizona Public Service    11/12 at 100.00    AAA    1,290,013 
     Company – Palo Verde Project, Series 2002A, 5.050%, 5/01/29 – AMBAC Insured             
1,660    Puerto Rico Electric Power Authority, Power Revenue Bonds, Series 2005RR, 5.000%, 7/01/26 –    7/15 at 100.00    AAA    1,735,663 
     XLCA Insured             
    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    281,834 
1,000     5.000%, 1/01/31    1/13 at 100.00    Aa1    1,025,820 
1,165    Salt Verde Financial Corporation, Arizona, Senior Gas Revenue Bonds, Series 2007,    No Opt. Call    Aa1    1,126,963 
     5.000%, 12/01/32             
5,345    Total Utilities            5,460,293 
    Water and Sewer – 12.4% (8.0% of Total Investments)             
405    Oro Valley Municipal Property Corporation, Arizona, Senior Lien Water Revenue Bonds, Series    7/13 at 100.00    AAA    422,869 
     2003, 5.000%, 7/01/23 – MBIA Insured             
1,000    Phoenix Civic Improvement Corporation, Arizona, Junior Lien Wastewater System Revenue    7/11 at 100.00    AAA    1,045,070 
     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    2,095,980 
     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    961,934 
     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    4/14 at 100.00    N/R    417,992 
490     4.900%, 4/01/32    4/17 at 100.00    N/R    473,728 
5,240    Total Water and Sewer            5,417,573 
$         64,915    Total Investments (cost $66,030,752) – 154.7%            67,358,310 
    Floating Rate Obligations – (5.8)%            (2,545,000) 
    Other Assets Less Liabilities – 1.6%            720,166 
    Preferred Shares, at Liquidation Value – (50.5)%            (22,000,000) 
    Net Assets Applicable to Common Shares – 100%           $   43,533,476 

    All of the bonds in the Portfolio of Investments are either covered by Original Issue Insurance, Secondary 
    Market Insurance or Portfolio Insurance, or are backed by an escrow or trust containing sufficient U.S. 
    Government or U.S. Government agency securities, any of which ensure the timely payment of principal 
    and interest. 
(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 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. 
(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. 
(UB)    Underlying bond of an 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 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 October 31, 2007, the cost of investments was $63,531,967.

Gross unrealized appreciation and gross unrealized depreciation of investments at October 31, 2007, were as follows:

Gross unrealized:     
  Appreciation    $1,627,696 
  Depreciation    (341,262) 
Net unrealized appreciation (depreciation) of investments    $1,286,434 

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         December 28, 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         December 28, 2007        

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

Date        December 28, 2007        

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