Bartholomew Patrick "Bertie" Ahern (born 12 September 1951) is an Irish former Fianna Fáil politician who served as Taoiseach from 1997 to 2008, and as Leader of Fianna Fáil from 1994 to 2008. A Teachta Dála (TD) from 1977 to 2011, he served as Leader of the Opposition from 1994 to 1997.