John Maurice Alex "Jack" Marshall (26 October 1916 – 19 March 2000) was an English cricketer who played first-class cricket in 29 matches for Warwickshire and the Marylebone Cricket Club (MCC) between 1946 and 1956. He was born in Kenilworth, Warwickshire and died at Warwick. After 1946, when he was awarded his county cap, he played only occasional matches for Warwickshire through to 1950, without success; he returned to first-class cricket for a single game in 1956 for MCC against Ireland.