Cathy Bennett (born 1973/1974) is an Irish Sinn Féin politician who has been a Teachta Dála (TD) for the Cavan–Monaghan constituency since the 2024 general election.
Bennett has a degree in bio-pharmaceutical science. She previously worked in a laboratory in Castleblaney and is now a theatre manager in Monaghan town.
She was a member of Monaghan County Council from 2014 to 2024 for the Monaghan area. Bennett is the landlord of a rental property in Co. Monaghan as declared in the Dáil Register of Interests in March 2025.