Cornelius Sheehan could refer to:
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Connie Sheehan (1889–1950), Irish hurler
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Neil Sheehan
Cornelius Mahoney Sheehan (October 27, 1936 – January 7, 2021) was an American journalist. As a reporter for ''The New York Times'' in 1971, Sheehan obtained the classified ''Pentagon Papers'' from Daniel Ellsberg. His series of articles reve ...
(Cornelius Mahoney Sheehan, 1936–2021), American journalist
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Con Sheehan (born 1989), Irish boxer
{{human name disambiguation, Sheehan, Cornelius