Paul Kelly may refer to:
- Paul Kelly (criminal) (1876–1936), United States criminal and founder of the Five Points Gang
- Paul Kelly (actor) (1899–1956), US stage and screen actor
- Paul Kelly (U.S. musician) (born 1940), US soul singer-songwriter
- Paul Joseph Kelly, Jr. (born 1940), US federal judge
- Paul Kelly (journalist) (born 1947), Australian journalist
- Paul V. Kelly (born 1947), USMC, Assistant Secretary of State for Legislative Affairs, 2001–2005
- Paul Kelly (musician) (born 1955), Australian musician
- Paul Kelly (lawyer) (born c. 1955), US lawyer and former NHL Players Association executive director
- Paul Kelly (Irish musician) (born 1957), Irish musician
- Paul Austin Kelly (born 1960), US opera tenor and former rock musician
- Paul Kelly (film maker) (born 1962), United Kingdom film maker and musician
- Paul Kelly (professor) (born 1962), United Kingdom political theorist
- Paul Kelly (politician) (born 1963), Canadian politician
- Paul Kelly (footballer) (born 1969), Australian footballer
- Paul Kelly (soccer) (born 1974), American soccer player
- Paul Kelly (hurler) (born 1979), Irish hurler
- Paul Kelly (fighter) (born 1984), UK martial artist
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