Crook is a surname. Notable people with the surname include:
A. R. Crook (1864–1930), American geologist
Andrew Crook (born 1980), Australian cricketer
Billy Crook (American soccer) (born 1964)
Catherine Crook de Camp (1907–2000), American science fiction author
Clive Crook (born 1953), English columnist, editor and author
Eddie Crook, Jr. (1929–2005), American boxer
David Crook (1910–2000), British Marxist
David Moore Crook (1914–1944), British fighter pilot
Frances Crook (born 1952), British Labour Party politician
General Crook or General Columbus Crook (born 1945), an American blues musician
George Crook (1828–1890), American general
Hal Crook (born 1950), jazz trombonist
Howard Crook (born 1947), American tenor
Ian Crook (born 1963), former English professional football player
J. Mordaunt Crook (born 1937), British architectural historian
John Crook (disambiguation), multiple people
Lorianne Crook (born 1957), American radio and television personality
Mackenzie Crook (born 1971), British actor
Malcolm Crook, professor of French history
Margaret Brackenbury Crook (1886–1972), British Unitarian minister and U.S. professor of religious studies
Martyn Crook (1956–2008), British soccer coach
Max Crook (born 1936), American musician
P J Crook (born 1945), British painter
Reginald Douglas Crook, 1st Baron Crook (1901–1989), British peer
Steven Crook (born 1983), Australian cricketer
Terry Crook (born 1949), former English rugby league player
Thomas Crook (1798–1879), New York politician
Thurman C. Crook (1891–1981), U.S. politician
Tim Crooks (born 1949), former British rower
Tommy Crook (born 1944), American musician
Tony Crook (politician) (born 1959), Australian politician
Tony Crook (racing driver) (1920–2014), English racing driver
Walter Crook (1912–1988), English footballer and manager