Turnham is a surname. Notable people with the surname include:
Stephen Turnham Pratt, American physicist studying electron-nuclear coupling George Albert Turnham (1859–1948), American businessman and politician Joe Turnham (born 1959), American politician Laura Turnham or Lora Fachie, OBE (born 1988), visually impaired English racing cyclist Pete Turnham (1920–2019), American politician
See also Turnham Green, public park on Chiswick High Road, Chiswick, London, England, United Kingdom Thurnham (disambiguation)