Vincent ("Vince") John O'Sullivan (born February 23, 1957 in London, Greater London) is a retired male racewalker from the United States, who competed at the 1984 Summer Olympics for Team USA. He was fifth at the 1979 Pan American Games and also took part in the IAAF World Race Walking Cup.
|Representing the United States|
|1979||Pan American Games||San Juan, Puerto Rico||5th||50 km||4:44:20|
|1984||Olympic Games||Los Angeles, United States||14th||50 km||4:22:51|
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