Margaret Murphy O'Mahony (born 3 April 1969) is an Irish Fianna Fáil politician who has served as a senator for the Labour Panel since January 2025.

She previously served as a Teachta Dála (TD) for the Cork South-West constituency from 2016 to 2020.

[1] She had been a member of Cork County Council for the Bandon-Kinsale local electoral area from 2014 to 2016.

[2][3] She served on the now abolished Bandon Town Council from 2004 to 2014.

[citation needed] She lost her seat at the 2020 general election.