List of Famous people born in Leinster, Ireland

Arthur Edward Rory Guinness, 4th Earl of Iveagh,, styled Viscount Elveden until 1992, is an Anglo-Irish aristocrat and businessman. He is a member of the Guinness family.

Walter Richard Pollock Hamilton VC was born in Inistioge, County Kilkenny and was an Irish recipient of the Victoria Cross, the highest and most prestigious award for gallantry in the face of the enemy that can be awarded to British and Commonwealth forces. He is featured in M. M. Kaye's epic novel The Far Pavilions.

Henry Bruen was an Irish first-class cricketer and British Army officer.

Brian Bernard Cowen is an Irish former politician who served as Taoiseach and Leader of Fianna Fáil from 2008 to 2011.

Thomas Aubrey Spring Rice, 3rd Baron Monteagle of Brandon was an Anglo-Irish peer and British diplomat.

Viscountess Powerscourt Theodosia Wingfield was an Irish evangelical religious writer.

John Gerard Bruton is an Irish former Fine Gael politician who served as Taoiseach from 1994 to 1997, Ambassador of the European Union to the United States from 2004 to 2009, Leader of Fine Gael from 1990 to 2001, Leader of the Opposition from 1990 to 1994 and 1997 to 2001, Deputy Leader of Fine Gael from 1987 to 1990, Minister for the Public Service from January 1987 to March 1987, Minister for Finance from 1981 to 1982 and 1986 to 1987, Minister for Industry, Trade, Commerce and Tourism from 1983 to 1986, Minister for Industry and Energy from 1982 to 1983, Parliamentary Secretary to the Minister for Education and Parliamentary Secretary to the Minister for Industry and Commerce from 1973 to 1977. He served as a Teachta Dála (TD) from 1969 to 2004.

Mavis Henrietta Irene Hamilton married name Mavis Macnaughton (1911–1958), was a female Irish badminton international.

Thomas J. Moore was an Irish-American actor and director. He appeared in at least 186 motion pictures from 1908 to 1954. Frequently cast as the romantic lead, he starred in silent movies as well as in some of the first talkies.