Gully is a surname. Notable people with the surname include:
James Manby Gully (1808–1883), English medical doctor known for practising hydrotherapy John Gully (1783–1863), English prize-fighter, horse racer and politician John Gully (artist) (1819–1888), New Zealand landscape painter William Gully, 1st Viscount Selby (1835–1909), British lawyer and politician, son of James Gully
See also Gulley, another surname