Triathlon Ireland (Irish: Trí-Atlan Éireann, formerly the Irish Triathlon Association, is the governing body of triathlon, and duathlon, on the island of Ireland. It was founded in 1984. Darren Coombes has been the CEO since 2020. The organisation is one of a number of governing bodies based in Sports Campus Ireland in Fingal. It joined the Olympic Federation of Ireland in 2000.