Blok is a surname. Notable people with the surname include:
Alexander Blok (1880–1921), Russian lyrical poetAnton Blok (b. 1935), Dutch anthropologistBenjamin Blok (1631–1690), German-Hungarian painter, son of DanielDaniel Blok (1580–1660), German painter of Dutch ancestryDick Blok (b. 1925), Dutch scholar of onomasticsHetty Blok (1920–2012), Dutch cabaret artist, singer, and actressJosine Blok (b. 1953), Dutch classical scholarPeter Blok (b. 1960), Dutch stage, television, film and voice actorPetrus Johannes Blok (1855–1929), Dutch historianStef Blok (b. 1964), Dutch politicianVladimir Blok (1932–1996), Russian musicologist, composer and orchestratorWilly Blok Hanson (1914–2012), Javanese-born Canadian dancer and choreographer