National Capital Region Land Conservation Act of 2009

National Capital Region Land Conservation Act of 2009 - Amends the Capper-Cramton Act to authorize the Secretary of the Interior, acting through the Director of the National Park Service (NPS), to make grants to Maryland, Virginia, West Virginia, and the District of Columbia and their political subdivisions (the covered states and covered local governments) for assistance in acquiring lands and interests therein that affect or are within the National Capital region and will be used for: (1) parks; (2) open space; (3) green space corridors that link public lands, lands subject to conservation restrictions, or a combination of such lands; (4) agriculture; (5) forests; (6) fish and wildlife habitat; (7) watershed protection; (8) historic preservation; (9) sensitive environmental area protection; and (10) public recreation.

Bars the use of any land and interest acquired through the assistance of such a grant for a purpose other than a purpose specified above.

Limits grant amounts to 50% of the total cost of the acquisition the grant will assist, including costs related to purchase price, appraisal, survey, title clearance, and closing.

Authorizes the Secretary to make grants to covered states, covered local governments, and nonprofits to plan and evaluate acquisitions eligible for a grant for assistance under this Act.