| Office: | Senator |
| Term Start: | 23 June 1965 |
| Term End: | 18 June 1969 |
| Constituency: | Administrative Panel |
| Office1: | Teachta Dála |
| Term Start1: | June 1969 |
| Term End1: | February 1973 |
| Term Start2: | May 1951 |
| Term End2: | April 1965 |
| Term Start3: | June 1943 |
| Term End3: | February 1948 |
| Constituency3: | Cavan |
| Party: | Fine Gael |
| Otherparty: | Clann na Talmhan |
| Birth Date: | 6 April 1906 |
| Birth Place: | County Cavan, Ireland |
| Death Place: | County Cavan, Ireland |
Patrick O'Reilly (6 April 1906 – 19 February 1994) was an Irish politician. A farmer by profession, he was elected to Dáil Éireann at the 1943 general election as a Clann na Talmhan Teachta Dála (TD) for the Cavan constituency and was re-elected at the 1944 general election.[1] He did not contest the 1948 general election.
He was elected as a Fine Gael TD for Cavan at the 1951, 1954, 1957 and 1961 general elections. He lost his Dáil seat at the 1965 general election but was elected to the 11th Seanad on the Agricultural Panel. He was re-elected to the Dáil at the 1969 general election but lost his seat at the 1973 general election.[2]