Winterton is a surname. Notable people with the surname include:
Ann Winterton (born 1941), UK politician George Winterton (1946–2008), Australian barrister Sir Nicholas Winterton (born 1938), UK politician Paul Winterton (1908-2001), UK journalist and novelist writing using noms-de-plume Rosie Winterton (born 1958), UK politician Ryan Winterton (born 2003), Canadian ice hockey player