John William Crook (14 November 1895 – 4 July 1970) was an Australian politician.
He was a member of the New South Wales Legislative Assembly from 1949 to 1959.
He was an office-holder in the Miners' Federation and was general secretary of the Northern Lodge of the union from 1934 to 1949.
He won ALP pre-selection for the seat of Cessnock at a 1949 by-election caused by the resignation of Jack Baddeley to accept a position with the New South Wales State Coal Authority.
He did not contest the 1959 election and was succeeded by George Neilly.