Shay Brennan (born 1973/1974)[1] is an Irish Fianna Fáil politician who has been a Teachta Dála (TD) for the Dublin Rathdown constituency since the 2024 general election.

[2][1] He is the son of Séamus Brennan, and contested the 2009 Dublin South by-election which followed the death of his father in 2008.

Brennan was a member of Dún Laoghaire–Rathdown County Council from 2014 until his election to the Dáil in 2024.

[3][4]