| Medal record | |||
|---|---|---|---|
Competitor for  United States |
|||
| Men’s Swimming | |||
| Olympic Games | |||
| Gold | 1984 Los Angeles | 1500m Freestyle | |
| Pan American Games | |||
| Gold | 1987 Indianapolis | 200m Backstroke | |
| Gold | 1987 Indianapolis | 4x200m Freestyle | |
Michael ("Mike") Jon O'Brien (born October 23, 1965) is a former freestyle and backstroke swimmer from the United States, who won the gold medal in the men's 1500m freestyle event at the 1984 Summer Olympics in Los Angeles, California.
References
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1906: Henry Taylor | 1908: Henry Taylor | 1912: George Hodgson | 1920: Norman Ross | 1924: Boy Charlton | 1928: Arne Borg | 1932: Kusio Kitamura | 1936: Noboru Terada | 1948: James McLane | 1952: Ford Konno | 1956: Murray Rose | 1960: John Konrads | 1964: Bob Windle | 1968: Mike Burton | 1972: Mike Burton | 1976: Brian Goodell | 1980: Vladimir Salnikov | 1984: Michael O'Brien | 1988: Vladimir Salnikov | 1992: Kieren Perkins | 1996: Kieren Perkins | 2000: Grant Hackett | 2004: Grant Hackett |
