Jack Wallace Cook (July 27, 1926 – November 24, 2021) was an American baseball coach and player, serving two stints as head coach for Marshall Thundering Herd baseball team 1955 and 1967–1989. In 1994, Cook was inducted into the Marshall University Athletics Hall of Fame for his career as a coach and player.
During his time at Marshall, he led the Thundering Herd to their first NCAA tournament in 1973. Cook would led Marshall to the NCAA tournament again in 1978 whilst winning SoCon Coach of the Year. Prior to his second stint at Marshall, Cook was the head baseball coach at Huntington High School in West Virginia.
In 2023, it was announced that Marshall's new baseball stadium will be named Jack Cook Field in his honor.