Family name Donlon (Donlon 
, Донлон) , in all the world, is quite a rare surname. The family name Donlon is habitual in Ireland, where it is quite a common surname, Isle of Man, where it is quite a rare surname, and Bahrain. Not in comparison with a country's population, it most frequently occurs in the United States, Ireland, and the United Kingdom.
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| Donlon | Argentina, United Kingdom, United States, Ireland, Australia |
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alphonsus j. donlon American Jesuit priest, US (b. 1867) |
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roger donlon United States Army Medal of Honor recipient, US (b. 1934) |
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denise donlon Canadian businesswoman, CA (b. 1956) |
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| peter donlon American rower, US (b. 1906) |
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| dolores donlon American actress, US (b. 1920) |
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| christine donlon American actress, US (b. 1950) |
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| william c. donlon (b. 1952) |
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| marguerite donlon Irish dancer, choreographer and ballet director, IE (b. 1966) |
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| chris donlon Australian rules football umpire (b. 1977) |
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| billy donlon American basketball player-coach, US (b. 1977) |
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| tommy donlon (b. 1968) |
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| ciara donlon Irish entrepreneur |
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| denise donlon researcher |
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| noel donlon researcher (ORCID 0000-0002-4073-3896) |
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| greg donlon college basketball player (2013–2017) Virginia Tech |
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