Daniel O'Reilly may refer to:
Daniel O'Reilly (bishop) (1700–1778), Roman Catholic Bishop of Clogher in Ireland Daniel O'Reilly (comedian) (born 1984) Comedian, actor, social media content creator. Daniel O'Reilly (footballer) (born 1995), Irish soccer player Daniel O'Reilly (politician) (1838–1911), Irish-born U.S. Representative from New York, 1879-81 Danny O'Reilly, Irish musician, lead singer of The Coronas