Christoff is both a given name and a surname. Notable people with the name include:
Given name Christoff Bryan (born 1996), Jamaican high jumper Christoff De Bolle (born 1976), known by the mononym Christoff, Belgian Flemish schlager singer and radio presenter Christoff Van Heerden (born 1985), South African racing cyclist
Middle name Hans Christoff von Königsmarck (1605–1663), Swedish-German soldier
Surname A. J. Christoff (born 1948), American football coach Boris Christoff (1914–1993), Bulgarian opera singer Stefan Christoff, Canadian journalist, community organizer and musician Steve Christoff (born 1958), American ice hockey player
See also Christoff Cliff, rocky cliff forming Aytos Point on the coast of Bransfield Strait, eastern Livingston Island in the South Shetland Islands, Antarctica