Blok is a surname. Notable people with the surname include:
Alexander Blok (1880–1921), Russian lyrical poet
Anton Blok (b. 1935), Dutch anthropologist
Benjamin Blok (1631–1690), German-Hungarian painter, son of Daniel
Daniel Blok (1580–1660), German painter of Dutch ancestry
Dick Blok (b. 1925), Dutch scholar of onomastics
Hetty Blok (1920–2012), Dutch cabaret artist, singer, and actress
Josine Blok (b. 1953), Dutch classical scholar
Peter Blok (b. 1960), Dutch stage, television, film and voice actor
Petrus Johannes Blok (1855–1929), Dutch historian
Stef Blok (b. 1964), Dutch politician
Vladimir Blok (1932–1996), Russian musicologist, composer and orchestrator
Willy Blok Hanson (1914–2012), Javanese-born Canadian dancer and choreographer
