David F. Gantt Jr. (September 12, 1941 – July 1, 2020) was an American politician who served as a member of the New York Assembly from 1983 to 2020 as a member of the Democratic Party. Prior to his Assembly tenure, he was a member of the Monroe County, New York Legislature. He was the first and, until the election of Demond Meeks in 2020, only black person to represent Monroe County in the New York Assembly.