Gerster is a surname. Notable people with the surname include:
Andreas Gerster (born 1982), international footballer from LiechtensteinBéla Gerster (1850–1923), Hungarian engineer and canal architectEtelka Gerster (1855–1920), Hungarian sopranoGeorg Gerster (born 1928), Swiss journalist and a pioneer aerial photographerFrank Gerster (born 1976), former German footballerJan-Ole Gerster (born 1978), German film directorPetra Gerster (born 1955), German journalistRobin Gerster, Australian author and academic