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UNITEDSTATES
SECURITIESANDEXCHANGECOMMISSION
Washington,D.C.20549

FORM N-Q

QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED
MANAGEMENT INVESTMENT COMPANY

Investment Company Act file number 811-07083

Name of Fund: BlackRock MuniYield Arizona Fund, Inc. (MZA)

Fund Address: 100 Bellevue Parkway, Wilmington, DE 19809

Name and address of agent for service: Anne F. Ackerley, Chief Executive Officer, BlackRock
MuniYield Arizona Fund, Inc., 55 East 52nd Street, New York, NY 10055.

Registrant’s telephone number, including area code: (800) 882-0052, Option 4

Date of fiscal year end: 07/31/2010

Date of reporting period: 04/30/2010

Item 1 – Schedule of Investments


Schedule of Investments April 30, 2010 (Unaudited)

BlackRock MuniYield Arizona Fund, Inc. (MZA)
(Percentages shown are based on Net Assets)

     Par   
Municipal Bonds    (000)  Value 
Arizona — 131.5%       
County/City/Special District/School District — 51.2%   
City of Glendale Arizona, RB (NPFGC),       
   5.00%, 7/01/25  $ 2,305  $ 2,437,007 
City of Tucson Arizona, COP (AGC),       
   5.00%, 7/01/29    1,000  1,026,570 
County of Pinal Arizona, COP:       
   5.00%, 12/01/26    1,250  1,250,450 
   5.00%, 12/01/29    1,250  1,233,050 
Downtown Phoenix Hotel Corp., RB,       
   Senior Series A (FGIC), 5.00%,       
   7/01/36    915  738,478 
Gila County Unified School District       
   No. 10-Payson Arizona, GO, School       
   Improvement Project of 2006,       
   Series A (AMBAC), 5.25%, 7/01/27    1,000  1,027,570 
Gilbert Public Facilities Municipal       
   Property Corp. Arizona, RB, 5.50%,       
   7/01/27    2,000  2,159,700 
Gladden Farms Community Facilities       
   District, GO, 5.50%, 7/15/31    750  585,930 
Greater Arizona Development Authority,     
   RB, Santa Cruz County Jail, Series 2,     
   5.25%, 8/01/31    1,000  1,039,270 
Maricopa County Community College       
   District Arizona, GO, Series C, 3.00%,     
   7/01/22    1,000  958,450 
Maricopa County Elementary School       
   District No. 3-Tempe Elementary       
   Arizona, GO, Refunding (NPFGC),       
   7.50%, 7/01/10    290  293,257 
Maricopa County Public Finance Corp.,     
   RB, Series A (AMBAC), 5.00%,       
   7/01/24    2,500  2,633,950 
Maricopa County Unified School District     
   No. 11-Peoria Arizona, GO, School       
   Improvement, Second Series       
   (NPFGC), 5.00%, 7/01/25    430  454,609 
Maricopa County Unified School District     
   No. 89-Dysart Arizona, GO, School       
   Improvement Project of 2006,       
   Series C, 6.00%, 7/01/28    1,000  1,110,910 
Mohave County Unified School District     
   No. 20 Kingman, GO, School       
   Improvement Project of 2006,       
   Series C (AGC):       
     5.50%, 7/01/20    1,150  1,318,326 
     5.00%, 7/01/26    1,000  1,068,940 

     Par   
Municipal Bonds    (000)  Value 
Arizona (continued)       
County/City/Special District/School District (concluded)   
Phoenix Civic Improvement Corp., RB,       
   Subordinate, Civic Plaza Expansion       
   Project, Series A (NPFGC), 5.00%,       
   7/01/35  $ 3,325  $ 3,356,421 
Queen Creek Improvement District       
   No. 1, Special Assessment Bonds,       
   5.00%, 1/01/32    2,000  1,826,900 
Scottsdale Municipal Property Corp.       
   Arizona, RB, Water & Sewer       
   Development Project, Series A,       
   5.00%, 7/01/24    1,500  1,645,200 
Scottsdale Municipal Property Corp.       
   Arizona, Refunding RB, 5.00%,       
   7/01/26    1,570  1,783,708 
Vistancia Community Facilities District       
   Arizona, GO:       
     6.75%, 7/15/22    1,275  1,301,214 
     5.75%, 7/15/24    750  743,468 
Yuma County Library District, GO       
   (Syncora), 5.00%, 7/01/26    1,465  1,521,197 
      31,514,575 
Education — 15.0%       
Arizona State University, RB,       
   Series 2008-C:       
     6.00%, 7/01/25    970  1,103,278 
     6.00%, 7/01/26    745  842,930 
     6.00%, 7/01/27    425  478,979 
     6.00%, 7/01/28    300  337,218 
Maricopa County IDA Arizona, RB,       
   Arizona Charter Schools Project,       
   Series A, 6.63%, 7/01/20    900  693,405 
Pima County IDA, RB:       
     American Charter Schools       
     Foundation, Series A, 5.63%,       
     7/01/38    500  395,500 
     Arizona Charter Schools Project,       
     Series C, 6.70%, 7/01/21    725  725,022 
     Arizona Charter Schools Project,       
     Series C, 6.75%, 7/01/31    985  950,003 
Pima County IDA, Refunding RB:       
     Arizona Charter Schools Project,       
     Series O, 5.00%, 7/01/26    1,000  808,950 
     Charter Schools II, Series A, 6.75%,     
     7/01/21    575  575,345 

Portfolio Abbreviations

To simplify the listings of portfolio holdings in the Schedule of Investments, the names and descriptions of many of the securities have been abbreviated
according to the following list:

AGC  Assured Guaranty Corp.  GNMA  Government National Mortgage Association 
AMBAC  American Municipal Bond Assurance Corp.  GO  General Obligation Bonds 
AMT  Alternative Minimum Tax (subject to)  IDA  Industrial Development Authority 
CAB  Capital Appreciation Bonds  NPFGC  National Public Finance Guarantee Corp. 
COP  Certificates of Participation  RB  Revenue Bonds 
FGIC  Financial Guaranty Insurance Co.  S/F  Single-Family 

BLACKROCK MUNIYIELD ARIZONA FUND, INC.

APRIL 30, 2010

1


Schedule of Investments (continued)

BlackRock MuniYield Arizona Fund, Inc. (MZA)
(Percentages shown are based on Net Assets)

     Par   
Municipal Bonds    (000)  Value 
Arizona (continued)       
Education (concluded)       
University of Arizona, COP, Refunding,     
   University of Arizona Projects, Series A     
   (AMBAC), 5.13%, 6/01/29  $ 905  $ 917,435 
University of Arizona, COP, University of     
   Arizona Projects, Series B (AMBAC),     
   5.00%, 6/01/28    1,400  1,412,684 
      9,240,749 
Health — 17.6%       
Arizona Health Facilities Authority, RB,     
   Catholic Healthcare West, Series A,       
   6.63%, 7/01/20    1,435  1,462,796 
Arizona Health Facilities Authority,       
   Refunding RB, Banner Health,       
   Series D:       
     6.00%, 1/01/30    1,500  1,536,555 
     5.50%, 1/01/38    1,300  1,322,659 
Maricopa County IDA Arizona, Refunding     
   RB, Series A:       
Catholic Healthcare West, 5.50%,        
     7/01/26    1,850  1,886,371 
     Samaritan Health Services,       
     (NPFGC), 7.00%, 12/01/16 (a)    1,000  1,219,020 
Tucson IDA, RB, Christian Care Project,     
   Series A (Radian), 6.13%,       
   7/01/10 (b)    1,000  1,018,690 
University Medical Center Corp. Arizona,     
   RB, 6.50%, 7/01/39    500  532,990 
Yavapai County IDA Arizona, RB,       
   Yavapai Regional Medical Center,       
   Series A, 6.00%, 8/01/33    1,800  1,810,332 
      10,789,413 
Housing — 7.5%       
Maricopa County & Phoenix Industrial     
   Development Authorities, Refunding     
   RB, AMT (GNMA), S/F:       
     Series A-1, 5.75%, 5/01/40    680  710,165 
     Series A-2, 5.80%, 7/01/40    490  498,879 
Maricopa County IDA Arizona, RB, Series     
   3-B, AMT (GNMA), 5.25%, 8/01/38    987  1,005,706 
Phoenix & Pima County IDA, RB, Series     
   1A, AMT (GNMA), 5.65%, 7/01/39    468  486,497 
Phoenix & Pima County IDA, Refunding     
   RB, Series 2007-1, AMT (GNMA),       
   5.25%, 8/01/38    970  976,666 
Phoenix IDA Arizona, Refunding RB,       
   Series 2007-2, AMT (GNMA), 5.50%,     
   8/01/38    889  929,773 
      4,607,686 
State — 16.8%       
Arizona School Facilities Board, COP:       
     5.13%, 9/01/21    1,000  1,079,540 
     5.75%, 9/01/22    2,000  2,227,920 

     Par   
Municipal Bonds    (000)  Value 
Arizona (concluded)       
State (concluded)       
Arizona Sports & Tourism Authority, RB,     
   Baseball Training Facilities Project,     
   5.00%, 7/01/16  $ 1,000  $ 1,023,750 
Arizona State Transportation Board, RB,     
   Series B, 5.00%, 7/01/30    4,000  4,270,440 
Greater Arizona Development Authority,     
   RB, Series B (NPFGC), 5.00%,       
   8/01/30    1,700  1,735,275 
      10,336,925 
Transportation — 4.3%       
Phoenix Civic Improvement Corp., RB     
   Senior Lien:       
       Series A, 5.00%, 7/01/33    1,000  1,015,350 
       Series B, AMT (NPFGC), 5.75%,       
     7/01/17    1,000  1,038,170 
       Series B, AMT (NPFGC), 5.25%,       
     7/01/32    600  598,398 
      2,651,918 
Utilities — 19.1%       
City of Mesa Arizona, RB (NPFGC),       
   5.00%, 7/01/23    1,500  1,658,805 
City of Mesa Arizona, Refunding RB       
   (NPFGC), 5.00%, 7/01/20    1,000  1,112,430 
Gilbert Water Resource Municipal       
   Property Corp., RB, Subordinate Lien     
   (NPFGC), 5.00%, 10/01/29    900  928,089 
Phoenix Civic Improvement Corp., RB,     
   Junior Lien (NPFGC), 5.50%, 7/01/20  2,500  2,701,725 
Phoenix Civic Improvement Corp.,       
   Refunding RB, Senior Lien, 5.50%,       
   7/01/22    2,000  2,272,840 
Pinal County IDA Arizona, RB, San       
   Manuel Facility Project, AMT, 6.25%,     
   6/01/26    500  432,075 
Salt River Project Agricultural       
   Improvement & Power District, RB,     
   Series A, 5.00%, 1/01/24    1,000  1,095,860 
Salt River Project Agricultural       
   Improvement & Power District,       
   Refunding RB, Salt River Project,       
   Series A, 5.00%, 1/01/35    1,500  1,556,070 
      11,757,894 
Total Municipal Bonds in Arizona      80,899,160 
Guam — 1.6%       
Utilities — 1.6%       
Guam Government Waterworks       
   Authority, Refunding RB, Water,       
   5.88%, 7/01/35    1,000  980,970 
Total Municipal Bonds in Guam      980,970 

2 BLACKROCK MUNIYIELD ARIZONA FUND, INC.

APRIL 30, 2010


Schedule of Investments (continued)

BlackRock MuniYield Arizona Fund, Inc. (MZA)
(Percentages shown are based on Net Assets)

     Par   
Municipal Bonds    (000)  Value 
Puerto Rico — 20.8%       
County/City/Special District/School District — 1.3%   
Puerto Rico Sales Tax Financing Corp.,     
   Refunding RB, CAB, Series A (NPFGC),     
   5.76%, 8/01/41 (c)  $ 5,000  $ 789,750 
Housing — 2.2%       
Puerto Rico Housing Finance Authority,     
   Refunding RB, Subordinate, Capital     
   Fund Modernization, 5.50%,       
   12/01/18    1,250  1,366,825 
State — 7.3%       
Commonwealth of Puerto Rico, GO,       
   Series A, 6.00%, 7/01/38    800  839,376 
Puerto Rico Public Buildings Authority,     
   Refunding RB, Government Facilities:     
     Series M-3, (NPFGC), 6.00%,       
     7/01/28    900  946,737 
     Series N, 5.50%, 7/01/27    1,000  1,021,280 
Puerto Rico Sales Tax Financing Corp.,     
   RB, First Sub-Series A, 6.38%,       
   8/01/39    1,500  1,684,245 
      4,491,638 
Transportation — 2.9%       
Puerto Rico Highway & Transportation     
   Authority, Refunding RB:       
     Series AA (NPFGC), 5.50%,       
     7/01/18    900  978,849 
     Series CC, 5.50%, 7/01/31    790  825,329 
      1,804,178 
Utilities — 7.1%       
Puerto Rico Aqueduct & Sewer       
   Authority, RB, Senior Lien, Series A     
   (Radian), 6.00%, 7/01/44    2,180  2,269,663 
Puerto Rico Electric Power Authority, RB,     
   Series WW:       
     5.38%, 7/01/24    1,000  1,057,100 
     5.50%, 7/01/38    1,000  1,027,050 
      4,353,813 
Total Municipal Bonds in Puerto Rico    12,806,204 
 Total Municipal Bonds – 153.9%                                              94,686,334
Municipal Bonds Transferred to Tender     
Option Bond Trusts (d)       
Arizona — 5.1%       
Utilities — 5.1%       
Phoenix Civic Improvement Corp., RB,     
   Junior Lien, Series A, 5.00%, 7/01/34  3,000  3,139,050 

    Value 
Total Municipal Bonds Transferred to     
Tender Option Bond Trusts – 5.1%  $ 3,139,050 
Total Long-Term Investments     
 (Cost – $96,485,242) – 159.0%                                        97,825,384
Short-Term Securities  Shares   
CMA Arizona Municipal Money Fund,     
0.00% (e)(f)  2,552,036  2,552,036 
Total Short-Term Securities     
(Cost – $2,552,036) – 4.1%    2,552,036 
Total Investments     
(Cost – $99,037,278*) – 163.1%    100,377,420 
Other Assets less Liabilities – 2.4%    1,457,236 
Liability for Trust Certificates, Including Interest   
Expense and Fees Payable – (2.4)%    (1,501,213) 
Preferred Shares, at Redemption Value – (63.1)%  (38,804,830) 
Net Assets Applicable to Common Shares – 100.0% $  61,528,613 

* The cost and unrealized appreciation (depreciation) of investments as of

April 30, 2010, as computed for federal income tax purposes, were as

Aggregate follows: cost  $ 97,617,608 
Gross unrealized appreciation  $ 2,878,946 
Gross unrealized depreciation  (1,619,134) 
Net unrealized appreciation  $ 1,259,812 

(a) Security is collateralized by Municipal or US Treasury obligations.
(b) US government securities, held in escrow, are used to pay interest on this
security as well as to retire the bond in full at the date indicated, typically
at a premium to par.
(c) Represents a zero-coupon bond. Rate shown reflects the current yield as
of report date.
(d) Securities represent bonds transferred to a tender option bond trust in
exchange for which the Fund acquired residual interest certificates.
These securities serve as collateral in a financing transaction.
(e) Investment in companies considered to be affiliate of the Fund during the
period, for purposes of Section 2(a)(3) of Investment Act of 1940 were as
follows:

  Shares    Shares     
  Held at    Held at     
  July 31,  Net  April 30,     
     Affiliate  2009  Activity  2010  Income   
     CMA Arizona           
         Municipal           
         Money Fund  4,187,171  (1,635,135)  2,552,036    -- 
(f) Represents the current yield as of report date.       

BLACKROCK MUNIYIELD ARIZONA FUND, INC.

APRIL 30, 2010

3


Schedule of Investments (concluded)

BlackRock MuniYield Arizona Fund, Inc. (MZA)

Fair Value Measurements - Various inputs are used in determining the fair
value of investments, which are as follows:

• Level 1 — price quotations in active markets/exchanges for identical
assets and liabilities

• Level 2 — other observable inputs (including, but not limited to: quoted
prices for similar assets or liabilities in markets that are active, quoted
prices for identical or similar assets or liabilities in markets that are not
active, inputs other than quoted prices that are observable for the
assets or liabilities (such as interest rates, yield curves, volatilities,
prepayment speeds, loss severities, credit risks and default rates) or
other market-corroborated inputs)

• Level 3 — unobservable inputs based on the best information available
in the circumstances, to the extent observable inputs are not available
(including the Fund's own assumptions used in determining the fair
value of investments)

The inputs or methodologies used for valuing securities are not necessarily
an indication of the risk associated with investing in those securities. For
information about the Fund's policy regarding valuation of investments and
other significant accounting policies, please refer to the Fund’s most recent
financial statements as contained in its semi-annual report.

The following table summarizes the inputs used as of April 30, 2010 in
determining the fair valuation of the Fund's investments:
Investments in Securities

Valuation Inputs  Level 1  Level 2  Level 3  Total 
Assets:         
     Long-Term               --       --    
         Investments1    $ 97,825,384             $ 97,825,384 
     Short-Term    --      --    
         Securities  $ 2,552,036      2,552,036 
Total  $ 2,552,036  $ 97,825,384     --   $ 100,377,420 

1See above Schedule of Investments for values in each sector.

BLACKROCK MUNIYIELD ARIZONA FUND, INC.

APRIL 30, 2010

4


Item 2 – Controls and Procedures

2(a) – 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”)) are effective as of a date within 90 days of the filing of this report based on the
evaluation of these controls and procedures required by Rule 30a-3(b) under the 1940 Act
and Rule 13(a)-15(b) under the Securities Exchange Act of 1934, as amended.

2(b) – There were no changes in the registrant's internal control over financial reporting (as defined
in Rule 30a-3(d) under the 1940 Act) 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

Certifications – Attached hereto

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.

BlackRock MuniYield Arizona Fund, Inc.

By: /s/ Anne F. Ackerley
Anne F. Ackerley
Chief Executive Officer of
BlackRock MuniYield Arizona Fund, Inc.

Date: June 28, 2010

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: /s/ Anne F. Ackerley
Anne F. Ackerley
Chief Executive Officer (principal executive officer) of
BlackRock MuniYield Arizona Fund, Inc.

Date: June 28, 2010

By: /s/ Neal J. Andrews
Neal J. Andrews
Chief Financial Officer (principal financial officer) of
BlackRock MuniYield Arizona Fund, Inc.

Date: June 28, 2010