Katherine Keith "Kate" Hanley is an American Democratic politician in Virginia currently serving as Secretary of the Fairfax County Electoral Board. She previously served as Secretary of the Commonwealth of Virginia from 2006 to 2010, Chairman of the Fairfax County Board of Supervisors from 1995 to 2003, as a County Supervisor for the Providence District from 1986 to 1995, and on the Fairfax County School Board from 1984 to 1986.