| Office: | Teachta Dála |
| Term Start: | May 1944 |
| Term End: | February 1948 |
| Term Start1: | June 1938 |
| Term End1: | June 1943 |
| Constituency1: | Clare |
| Office2: | Senator |
| Term Start2: | 8 September 1943 |
| Term End2: | 30 May 1944 |
| Constituency2: | Nominated by the Taoiseach |
| Party: | Fianna Fáil |
| Birth Place: | County Clare, Ireland |
| Death Place: | County Clare, Ireland |
Peter Joseph O'Loghlen (1883 – 25 October 1971) was an Irish Fianna Fáil politician. A publican, he was first elected to Dáil Éireann as a Teachta Dála (TD) for the Clare constituency at the 1938 general election.[1] He was lost his Dáil seat at the 1943 general election but was nominated by the Taoiseach to the 4th Seanad.[2]
He regained his Dáil seat at the 1944 general election. He did not contest the 1948 general election. O'Loghlen was a leading member of, and main political representative for the conservative Catholic group, An Ríoghacht.[3]