9/11 Memorial Cross National Monument Establishment Act of 2011 - Establishes the 9/11 Memorial Cross located at the National 9/11 Memorial Museum in the city of New York, New York, as a national monument.
Requires the Secretary of the Interior to complete a general management plan for such monument.
Terminates designation of such monument as a unit of the National Park System if federal funds are required for the operation and maintenance of the monument.