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.
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.
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