| Office: | Senator |
| Term Start: | 18 August 1944 |
| Term End: | 5 November 1969 |
| Constituency: | Agricultural Panel |
| Birth Date: | 1911 |
| Birth Place: | County Leitrim, Ireland |
| Death Place: | County Longford, Ireland |
| Party: | Fianna Fáil |
Patrick O'Reilly (1911–2003) was an Irish Fianna Fáil politician.[1] Born in Aughavas, County Leitrim, where he was a farmer, he later moved to Firmullagh, Moyne, County Longford. He served as a member of Leitrim County Council from 1942 to 1955.
O'Reilly was elected to Seanad Éireann as a Fianna Fáil Senator on the Agricultural Panel in 1944.[2] He was re-elected at each subsequent Seanad election until he lost his seat in 1969.[1]