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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 811-21051

Name of Fund: BlackRock Maryland Municipal Bond Trust (BZM)

Fund Address: 100 Bellevue Parkway, Wilmington, DE 19809

Name and address of agent for service: Anne F. Ackerley, Chief Executive Officer, BlackRock
Maryland Municipal Bond Trust, 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: 08/31/2010

Date of reporting period: 11/30/2009

Item 1 – Schedule of Investments

BlackRock Maryland Municipal Bond Trust (BZM)       
Schedule of Investments November 30, 2009 (Unaudited)  (Percentages shown are based on Net Assets) 
      Par   
  Municipal Bonds    (000)     Value 
Maryland - 115.1%         
Corporate - 1.0%  Maryland EDC, Refunding RB, Potomac Electric Power Co.,     
  6.20%, 9/01/22    $ 250  $ 283,677 
County/City/Special District/School  City of Annapolis Maryland, Tax Allocation Bonds, Park     
District - 39.2%  Place Project, Series A, 5.35%, 7/01/34    495  381,269 
  City of Baltimore Maryland, Special Tax Bonds, SO,     
  Harborview Lot No. 2, 6.50%, 7/01/31    993  912,279 
  County of Anne Arundel Maryland, RB, Community College     
  Project, 5.25%, 9/01/28    1,870  1,887,840 
  County of Baltimore Maryland, GO, Metropolitan District,     
  67th Issue, 5.00%, 6/01/22    2,000  2,073,420 
  County of Baltimore Maryland, GO, Metropolitan District,     
  68th Issue, 5.00%, 8/01/28    2,000  2,087,140 
  County of Frederick Maryland, Special Tax Bonds, Urbana     
  Community Development Authority, 6.63%, 7/01/25  1,000  935,050 
  County of Montgomery Maryland, RB, Metrorail Garage     
  Projects, 5.00%, 6/01/23    500  530,680 
  County of Montgomery Maryland, RB, Metrorail Garage     
  Projects, 5.00%, 6/01/24    1,435  1,523,052 
  County of Prince George's Maryland, SO, National Harbor     
  Project, 5.20%, 7/01/34    1,500  1,239,585 
        11,570,315 
Education - 16.4%  Maryland Health & Higher Educational Facilities Authority,     
  RB, Board of Child Care, 5.38%, 7/01/32    2,000  2,008,740 
  Maryland Health & Higher Educational Facilities Authority,     
  RB, Loyola College Issue, 5.00%, 10/01/39  2,000  1,960,360 
  Maryland Industrial Development Financing Authority, RB, Our     
  Lady of Good Counsel School, Series A, 6.00%, 5/01/35  1,000  872,350 
        4,841,450 
Health - 27.8%  County of Baltimore Maryland, Refunding RB, Oak Crest     
  Village Inc. Facility, Series A, 5.00%, 1/01/37  1,000  905,220 
  County of Howard Maryland, Refunding RB, Vantage House     
  Facility, Series A, 5.25%, 4/01/33    500  374,210 
  Maryland Health & Higher Educational Facilities Authority,     
  RB, Carroll County General Hospital, 6.00%, 7/01/37  1,990  2,021,701 
  Maryland Health & Higher Educational Facilities Authority,     
  RB, Peninsula Regional Medical Center,       
  5.00%, 7/01/36    1,000  992,680 
                     Portfolio Abbreviations         

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

AMBAC  American Municipal Bond Assurance Corp.  MBIA  Municipal Bond Investors Assurance 
AMT  Alternative Minimum Tax (subject to)    (National Public Finance Guaranty Corp.) 
EDC  Economic Development Corp.  RB  Revenue Bonds 
FSA  Financial Security Assurance Inc.  SO  Special Obligation 
GO  General Obligation Bonds     

1

BlackRock Maryland Municipal Bond Trust (BZM)       
Schedule of Investments November 30, 2009 (Unaudited)  (Percentages shown are based on Net Assets) 
      Par   
  Municipal Bonds    (000)     Value 
  Maryland Health & Higher Educational Facilities Authority,     
  RB, Union Hospital of Cecil County Issue, 5.63%, 7/01/32  $ 2,000  $ 2,014,460 
Maryland Health & Higher Educational Facilities
  Authority, RB, University of Maryland Medical System,     
  5.25%, 7/01/11 (a)    1,750  1,877,680 
        8,185,951 
Housing - 5.0%  Maryland Community Development Administration, RB,     
  Residential, Series A, 5.05%, 9/01/39    500  501,715 
  Maryland Community Development Administration, RB,     
  Residential, Series B, 4.75%, 9/01/39    500  490,050 
  Maryland Community Development Administration, Refunding     
  RB, Residential, Series A, AMT, 5.75%, 9/01/39  470  489,900 
        1,481,665 
Transportation - 6.7%  Maryland State Transportation Authority, RB,     
  Baltimore/Washington International Airport, Series B, AMT     
  (AMBAC), 5.13%, 3/01/24    2,000  1,971,020 
Utilities - 19.0%  City of Baltimore Maryland, Refunding RB, Wastewater     
  Projects, Series A (MBIA), 5.20%, 7/01/32  2,500  2,556,875 
  City of Baltimore Maryland, Refunding RB, Wastewater     
  Projects, Series A (MBIA), 5.13%, 7/01/42  2,000  2,009,760 
  County of Anne Arundel Maryland, GO, Consolidated,     
  Water & Sewer, 4.75%, 4/01/39    1,000  1,036,590 
        5,603,225 
  Total Municipal Bonds in Maryland      33,937,303 
District of Columbia - 3.6%         
Transportation - 3.6%  Washington Metropolitan Area Transit Authority, RB,     
  Transit, Series A, 5.13%, 7/01/32    $ 1,000  $ 1,047,400 
  Total Municipal Bonds in District of Columbia    1,047,400 
Guam - 0.9%         
County/City/Special District/School  Territory of Guam, RB, Section 30, Series A, 5.63%,     
District - 0.9%  12/01/29    250  252,955 
  Total Municipal Bonds in Guam      252,955 
Multi-State - 7.4%         
Housing - 7.4%  Centerline Equity Issuer Trust, 7.20%, 10/31/52 (b)(c)  2,000  2,177,680 
  Total Municipal Bonds in Multi-State      2,177,680 
Puerto Rico - 18.2%         
State - 5.1%  Commonwealth of Puerto Rico, GO, Refunding, Public     
  Improvement, Series A-4 (FSA), 5.25%, 7/01/30  130  133,627 
  Puerto Rico Public Buildings Authority, Refunding RB,     
  Government Facilities, Series D, 5.38%, 7/01/33  350  329,707 
Puerto Rico Sales Tax Financing Corp., RB, First
  Sub-Series A, 6.38%, 8/01/39    1,000  1,054,110 
        1,517,444 
Tobacco - 4.3%  Children's Trust Fund, Refunding RB, Asset-Backed, 5.50%,     
  5/15/39    1,500  1,269,840 

2

BlackRock Maryland Municipal Bond Trust (BZM)       
Schedule of Investments November 30, 2009 (Unaudited)  (Percentages shown are based on Net Assets) 
      Par   
  Municipal Bonds    (000)     Value 
Transportation - 8.8%  Puerto Rico Highway & Transportation Authority,     
  Refunding RB, Series CC (FSA), 5.25%, 7/01/36  $ 895  $ 922,324 
  Puerto Rico Highway & Transportation Authority,     
  Refunding RB, Series D, 5.25%, 7/01/12 (a)  1,500  1,663,155 
        2,585,479 
  Total Municipal Bonds in Puerto Rico      5,372,763 
U.S. Virgin Islands - 0.3%         
State - 0.3%  Virgin Islands Public Finance Authority, RB, Senior Lien,     
  Capital Projects, Series A-1, 5.00%, 10/01/39  100  89,483 
  Total Municipal Bonds in the U.S. Virgin Islands    89,483 
  Total Municipal Bonds - 145.5%      42,877,584 
  Municipal Bonds Transferred to       
  Tender Option Bond Trusts (d)       
Maryland - 10.5%         
Transportation - 10.5%  Maryland State Transportation Authority, RB,     
  Transportation Facility Project (FSA), 5.00%, 7/01/41  3,000  3,099,270 
  Total Municipal Bonds Transferred to       
  Tender Option Bond Trusts - 10.5%      3,099,270 
  Total Long-Term Investments       
  (Cost - $45,629,602) - 156.0%      45,976,854 
  Short-Term Securities    Shares   
  FFI Institutional Tax-Exempt Fund, 0.23% (e)(f)  300,000  300,000 
  Total Short-Term Securities       
  (Cost - $300,000) - 1.0%      300,000 
  Total Investments (Cost - $45,929,602*) - 157.0%    46,276,854 
  Other Assets Less Liabilities - 2.4%      698,166 
  Liability for Trust Certificates, Including Interest     
     Expense and Fees Payable - (5.1)%      (1,502,094) 
  Preferred Shares, at Redemption Value - (54.3)%    (16,000,775) 
  Net Assets Applicable to Common Shares - 100.0%  $ 29,472,151 

* The cost and unrealized appreciation (depreciation) of investments as of November 30, 2009, as computed
for federal income tax purposes, were as follows:

Aggregate cost  $ 44,319,428 
Gross unrealized appreciation  $ 1,429,394 
Gross unrealized depreciation  (971,968) 
Net unrealized appreciation  $ 457,426 

(a) 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.
(b) Security represents a beneficial interest in a trust. The collateral deposited into the trust is federally tax-exempt
revenue bonds issued by various state or local governments, or their respective agencies or authorities. The
security is subject to remarketing prior to its stated maturity, and is subject to mandatory redemption at
maturity.

(c) Security exempt from registration under Rule 144A of the Securities Act of 1933. These securities may be resold in
transactions exempt from registration to qualified institutional investors.

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BlackRock Maryland Municipal Bond Trust (BZM)
Schedule of Investments November 30, 2009 (Unaudited)

(d) Securities represent bonds transferred to a tender option bond trust in exchange for which the Trust acquired
residual interest certificates. These securities serve as collateral in a financing transaction.
(e) Investments in companies considered to be an affiliate of the Trust, for purposes of Section 2(a)(3) of the
Investment Company Act of 1940, were as follows:

  Net   
Affiliate  Activity  Income 
FFI Institutional Tax-Exempt Fund  $ (900,364)  $ 273 

(f) Represents the current yield as of report date.

• 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 Trust's own assumptions used in determining the fair
value of investments)

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

The following table summarizes the inputs used as of November 30, 2009 in determining the fair valuation of the
Trust's investments:

Valuation  Investments in 
Inputs  Securities 
  Assets 
Level 1 - Short-Term Securities  $ 300,000 
Level 2 - Long-Term Investments1  45,976,854 
Level 3  - 
Total  $ 46,276,854 

1See above Schedule of Investments for values in each
state and political subdivision.

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 Maryland Municipal Bond Trust

By: /s/ Anne F. Ackerley
Anne F. Ackerley
Chief Executive Officer of
BlackRock Maryland Municipal Bond Trust

Date: January 22, 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 Maryland Municipal Bond Trust

Date: January 22, 2010

By: /s/ Neal J. Andrews
Neal J. Andrews
Chief Financial Officer (principal financial officer) of
BlackRock Maryland Municipal Bond Trust

Date: January 22, 2010