John Philip Davey (born 29 December 1964) is an English former competition swimmer.
He swam for Great Britain in the Olympics and later became a collegiate head coach in the United States. He competed at the Summer Olympics in 1988 in Seoul, South Korea, and in 1992 in Barcelona, Spain.
At the 1982 Commonwealth Games in Brisbane, Australia, representing England he earned a silver medal as a member of the second-place English men’s team in the 4×200-metre freestyle relay. Individually, he won bronze medals in both the 400-metre freestyle and 400-metre individual medley. Four years later at the 1986 Commonwealth Games in Edinburgh, he won another bronze medal as part of the English men’s team in the 4×200-metre freestyle relay. He represented England at a third Games when competing in the freestyle and individual medley events, at the 1990 Commonwealth Games in Auckland, New Zealand.
He is a two times winner of the ASA National British Championships200 metres freestyle in 1982 and 1984 and was the 400 metres freestyle champion in 1983 and 1984. He was also the ASA National British Championships 100 metres backstroke champion in 1984 and 200 metres backstroke champion three times in 1983, 1984 and 1987 and 200 metres medley champion in 1991 and 1992 and the 400 metres medley champion in 1983, 1986, 1987 and 1988.
Davey received an athletic scholarship to attend the University of Iowa, in Iowa City, Iowa, United States, where he competed for the Iowa Hawkeyes swimming and diving team from 1985 to 1989. He was a ten-time champion in Big Ten Conference competition, and received ten All-American honors as a Hawkeye swimmer.