John Hare Kasley (January 2, 1916 – July 16, 1989) was an American competition swimmer who represented the United States at the 1936 Summer Olympics in Berlin.

[1] Kasley competed in the semifinals of the men's 200-meter breaststroke, recording a time of 2:53.4.

[1][2] Kasley attended the University of Michigan, and swam for the Michigan Wolverines swimming and diving team in National Collegiate Athletic Association (NCAA) competition from 1935 to 1937.

[3] During his three-year college swimming career, he won three consecutive NCAA national championships in the 200-yard butterfly (1935, 1936, 1937), and was also a member of Michigan's NCAA-winning teams in the 300-yard medley relay (1935, 1936, 1937).

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