Ganson is both a surname and a given name. Notable people with the name include:
Surname: Arthur Ganson (born 1955), American sculptor John Ganson (1818–1874), American lawyer and politician Josh Ganson (born 1998), English rugby league player Lewis Ganson (1913–1980), English magician Steve Ganson (born 1970), English rugby league referee
Given name: Ganson Purcell, American government official