| John Foster | |
| Full Name: | John Lewis Foster |
| Nationality: | Australian |
| Sport: | Water polo |
| Birth Date: | 11 May 1931 |
John Lewis 'Jake' Foster (11 May 1931 - 28 January 2013) was an Australian water polo player. He competed at the 1952 Summer Olympics and the 1956 Summer Olympics.[1]
His daughter Margot won a bronze in the women's coxed four event at the 1984 Summer Olympics in Los Angeles and son Peter won the bronze medal in the K-2 1000 m kayaking event at the 1988 Summer Olympics in Seoul.[2]