Sportsmen
- James Kelly (Australian rules footballer) (born 1983), Australian Football League player
- James Kelly (Scottish footballer) (1865–1932), played for Renton FC, Celtic FC and Scotland
- James Kelly (soccer) (c. 1920s), U.S. soccer player
- Jimmy Kelly (footballer born 1931) (1931–2003), English footballer active in the 1950s and 1960s
- Jimmy Kelly (footballer born 1933), Scottish footballer active in the 1950s
- Jimmy Kelly (footballer born 1954), Northern Irish footballer active in the 1970s and 1980s
- Jimmy Kelly (footballer born 1957), English footballer for Man Utd and NASL teams
- Jimmy Kelly (footballer born 1973), English footballer for Rhyl, Wrexham, Wolverhampton Wanderers and Chester City
- Jimmy Kelly (Irish footballer) (1911–1970), Irish footballer
- Jimmy Kelly (Northern Ireland footballer) (fl. 1920s), Northern Irish footballer
- Jimmy Kelly (hurler), Irish hurler
- Jim Kelly (baseball) (1884–1961), American baseball player
- Jim Kelly (born 1960), former American football quarterback
- Jim Kelly (basketball coach), DePaul University men's basketball coach, 1929–1936
- Jim Kelly (cricketer) (1867–1938), Australian cricketer
- Jim Kelly (martial artist) (born 1946), karate champion and martial arts film star
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