Gantt is a surname. Notable people with the surname include:
Bob Gantt (1922–1994), American basketball player David F. Gantt (1941–2020), member of the New York State Assembly Edward Gantt (1746–1837), American Episcopal clergyman Edward W. Gantt (1829–1874), American politician and Confederate soldier Fred Gantt (1922–2002), American basketball player Harvey Gantt (born 1943), architect and politician Henry Gantt (1861–1919), mechanical engineer and management consultant Love Gantt (1875–1935), American physician W. Horsley Gantt (1892–1980), American psychologist and physiologist