Cator is a surname. Notable people with the surname include:
Albemarle Cator (1877–1932), British Army officer Geoffrey Edmund Cator (1884–1973), British civil servant Joe Cator (born 1998), English rugby league footballer John Cator (1728–1806), British timber merchant and landowner John Cator (Huntingdon MP) (1862–1944), English politician Harry Cator (1894–1966), English recipient of the Victoria Cross Rhonda Cator (born 1966), retired female badminton player from Australia Silvio Cator (1900–1952), Haitian athlete Thomas Vincent Cator (1888–1931), American composer William Cator (1839–1902), Irish cricketer and clergyman