Lock (surname)
Lock is a surname, and may refer to:
- Bob Lock (born 1949), Welsh science fiction and fantasy writer
 - Charles Lock (1770–1804), British consul-general in Naples who quarrelled with Admiral Horatio Nelson regarding the latter's military actions
 - Charlie Lock (born 1962), Zimbabwean cricketer
 - C. N. H. Lock (1894–1949), English aerodynamicist
 - David Lock (born 1960), barrister and Labour Party politician in the United Kingdom
 - Don Lock (1936–2017), former Major League Baseball outfielder
 - Drew Lock (born 1996), American football quarterback
 - Édouard Lock (born 1954), Canadian dance choreographer
 - Eric Lock (1919–1941), British Royal Air Force fighter ace of the Second World War
 - Herbert Lock (1887–1957), English goalkeeper who played for Southampton and Rangers
 - James Lock (sound engineer) (1939–2009), two-time Grammy Award winner in the area of classical music
 - James Lock, an early owner (from 1759) and head of James Lock & Co., hatters in London
 - John Bascombe Lock (1849–1921), bursar of Gonville and Caius College, Cambridge
 - Matthias Lock, English 18th-century furniture designer and cabinet-maker
 - Mi Kwan Lock, French actress
 - Patti Frazer Lock (born 1953), American mathematician and statistician
 - Ray Lock, a Royal Air Force air vice-marshal
 - Robert Heath Lock (1879–1915), English geneticist
 - Sean Lock (1963–2021), English comedy writer, comedian and actor
 - Tony Lock (1929–1995), English Test cricketer
 - Trevor Lock (born 1973), English comedian, actor and playwright
 - Ulla Lock (1934–2012), Danish film actress