Brendan McGahon (22 November 1936 – 8 February 2017) was an Irish Fine Gael politician who served as a Teachta Dála (TD) for the Louth constituency from 1982 to 2002. Often described as 'colourful', with a reputation as a social conservative, McGahon was first elected to Dáil Éireann at the November 1982 general election and retained his seat until retiring at the 2002 general election.