Seán Barrett is an Irish former Fine Gael politician who served as Ceann Comhairle of Dáil Éireann from 2011 to 2016, Minister for Defence and Minister for the Marine from 1995 to 1997, Government Chief Whip from 1982 to 1986 and 1994 to 1995. He served as a Teachta Dála (TD) for the Dún Laoghaire constituency from 1981 to 2002 and 2007 to 2020.

The Ceann Comhairle is the chairperson of Dáil Éireann, the lower house of the Oireachtas (parliament) of Ireland. The person who holds the position is elected by members of the Dáil from among their number in the first session after each general election. The Ceann Comhairle since 10 March 2016 has been Seán Ó Fearghaíl, Fianna Fáil TD. The Leas-Cheann Comhairle since 23 July 2020 has been Catherine Connolly, Independent TD.