Mark Cook is a community leader committed to public service. Previous to serving on the city council, he served as the Chair of the College Park Advisory Planning Commission (APC) and was an active member of College Park's Committee for a Better Environment (CBE). Mark is also a member of Prince George's NAACP and serves as President of the Yarrow Citizens' Association.

A technology and business adviser with over twenty years professional experience in information technology, Mark Cook also served as the Co-Chair of the Public Affairs Group of the Baltimore Washington Corridor Chamber of Commerce which works to educate elected officials on issues of economic development. He is committed to improving our communities through increasing civic involvement and economic development. He resides in College Park with his wife Sylvia.