Charlton Atlee Hammaker is an American former Major League Baseball left-handed pitcher who played the majority of his career for the San Francisco Giants (1982–1990). He also played for the Kansas City Royals, San Diego Padres, and Chicago White Sox. During his twelve-year career, he won 59 games, lost 67 games and netted five saves.

Mount Vernon High School is a public high school in the Fairfax County Public Schools system located in Mount Vernon, Virginia.