William John Foster (born 3 February 1934) is a Scottish former first-class cricketer and Royal Marines officer.
Foster was born at Glasgow and was educated in England at Harrow School.
[1] He was commissioned into the Royal Marines as a second lieutenant in November 1952.
[4] He was promoted to the rank of captain in January 1964.
[5] Foster made two appearances in first-class cricket for the Combined Services cricket team in 1964, playing against Cambridge University at Uxbridge, and Oxford University at Aldershot.