Daniel O'Leary (1 September 1877 – 31 March 1951) was an Irish politician, farmer and vintner. He was an unsuccessful independent candidate at the 1923 general election, but was elected to Dáil Éireann as a Cumann na nGaedheal Teachta Dála (TD) for the Cork North constituency at the September 1927 general election.^[1]

He was re-elected at the 1932 and 1933 general elections.^[2] At the 1937 general election, he was elected as a Fine Gael TD for the Cork West constituency. He lost his seat at the 1938 general election, and was an unsuccessful candidate at the 1943 and 1944 general elections.