| Honorific-Prefix: | Senator |
| Office: | Chair of the Committee on Education and Social Protection |
| Term Start: | 4 April 2016 |
| Term End: | 10 February 2020 |
| Predecessor: | Joanna Tuffy |
| Successor: | Denis Naughten |
| Office1: | Senator |
| Term Start1: | 29 June 2020 |
| Constituency1: | Administrative Panel |
| Office2: | Teachta Dála |
| Term Start2: | February 2016 |
| Term End2: | February 2020 |
| Constituency2: | Kildare South |
| Birth Date: | 8 September 1965 |
| Birth Place: | Rathangan, County Kildare, Ireland |
| Nationality: | Irish |
| Party: | Fianna Fáil |
| Alma Mater: | Dublin Institute of Technology |
Fiona O'Loughlin (born 8 September 1965) is an Irish Fianna Fáil politician who has been a Senator for the Administrative Panel since April 2020. She previously served as a Teachta Dála (TD) for the Kildare South constituency from 2016 to 2020. She also served as Chair of the Committee on Education and Social Protection from 2016 to 2020.[1] [2]
She was a member of Kildare County Council from 1999 to 2016.[3]
She lost her Dáil seat at the 2020 general election.[4] [5] In April 2020, O'Loughlin was elected as a Senator for the Administrative Panel.[6]
In September 2020, she was named as Chairperson of the Irish delegation to the Parliamentary Assembly of the Council of Europe.[7]