Bartholomew "Bertie" Ahern (Irish: Pádraig Parthalán Ó hEachthairn; born 12 September 1951) is an Irish politician who, since 26 June 1997, has served as the tenth Taoiseach of Ireland. He currently heads a coalition government that is led by his Fianna Fáil party and also includes the Green Party and the Progressive Democrats, with the support of a number of independent TDs.
Ahern has been a Teachta Dála (TD) since 1977 and represents the constituency of Dublin Central. He served in the governments of Charles Haughey and Albert Reynolds as Minister for Labour (1987–1991) and Minister for Finance (1991–1994). He also served briefly as acting Tánaiste after the break-up of Albert Reynolds' coalition government. In 1994 he was elected sixth leader of Fianna Fáil.
Ahern is currently embroiled in a scandal regarding payments made to him in the mid-1990's. This issue has seen him called before The Mahon Tribunal and brings his continued leadership of the country into doubt.

Bertie Ahern (de son vrai nom Patrick Bartholemew Ahern, en irlandais : Pádraig Parthalán Ó hEachthairn) (12 septembre 1951) est un homme politique irlandais, dirigeant du Fianna Fail et premier ministre depuis 1997.
Il étudie les sciences économiques et financières à l'École de commerce de Rathmines et à l'University College de Dublin.
Il est TD (député) au Dail depuis 1977. Il est parole-parole pour la jeunesse en 1981 et 1982, "chief whip" (chef du groupe) du Fianna Fail dans l'opposition de 1982 à 1984, porte-parole pour les questions du travail de 1984 à 1987. Maire de Dublin en 1986 et 1987.