Catherine Byrne (born 26 February 1956) is an Irish former Fine Gael politician who served as a Minister of State from 2016 to 2020 and Lord Mayor of Dublin from 2005 to 2006.

She served as a Teachta Dála (TD) for the Dublin South-Central constituency from 2007 to 2020.

[2][3] She was party deputy spokesperson on Community, Rural and Gaeltacht Affairs, with special responsibility for National Drugs Strategy from 2007 to 2010.

[5] On 19 May 2016, Byrne was appointed by the Fine Gael–Independent government on the nomination of Taoiseach Enda Kenny as Minister of State at the Department of Health and at the Department of Housing, Planning, Community and Local Government with special responsibility for Communities and the National Drugs Strategy.

Byrne was leader of St Michael's Folk/Gospel Group for 15 years and has completed a two-year Lay Ministry Course in All Hallows College, and also holds a Diploma in Catering.