List of Famous people born in Leinster, Ireland

James M. Gibbons was an Irish Fianna Fáil politician who served as Minister for Agriculture from 1970 to 1973 and 1977 to 1979, Minister for Defence from 1969 to 1970 and Parliamentary Secretary to the Minister for Finance from 1965 to 1969. He served as a Teachta Dála (TD) for the Carlow–Kilkenny constituency from 1957 to 1981 and February 1982 to November 1982. He also served as a Member of the European Parliament (MEP) from 1973 to 1977.

James Reilly is an Irish former Fine Gael politician, businessman and medical doctor. Between the February 2016 general election and the 6 May 2016 formation of a new government, he was the Acting Minister for Children and Youth Affairs, having held that ministry since July 2014 in the previous government, and was also deputy leader of Fine Gael from 2010 to 2017. He was the Minister for Health from March 2011 to July 2014. Reilly was a Teachta Dála (TD) for the Dublin North constituency since the 2007 general election until he lost his seat in the 2016 general election. Reilly was a member of Seanad Éireann from May 2016 to March 2020, after being nominated by then Taoiseach, Enda Kenny. Reilly subsequently announced his retirement from politics after he lost his bid for election for his old seat at the 2020 general election.

Daniel Cassidy is a former Irish Fianna Fáil politician who served as Leader of Seanad Éireann from 2007 to 2011. He served as a Senator for the Labour Panel from 1982 to 2002 and 2007 to 2011 and a Teachta Dála (TD) for the Westmeath constituency from 2002 to 2007.

Peter Brendan Bellew is an Irish businessman who joined low-cost carrier Ryanair as chief operating officer (COO) since 2017. He is a veteran in the tourism and aviation industry with over 30 years of experience in related fields, including his prior stint as group managing director and chief executive officer of Malaysia Airlines. In July 2019, Bellew announced that he would be leaving Ryanair at the end of the year., controversially joining rival airline, easyJet.

Al Ferguson was an Irish-born American film actor. He appeared in nearly 300 films between 1912 and 1956. He was born in County Wexford, Ireland and died in Burbank, California. He is interred at Glendale's Forest Lawn Memorial Park Cemetery.

David Byrne SC is an Irish Fianna Fáil politician and barrister who served as Chancellor of Dublin City University from 2006 to 2011, European Commissioner for Health and Consumer Protection from 1999 to 2004 and the Attorney General of Ireland from 1997 to 1999.

James Stephens was an Irish Republican, and the founding member of an originally unnamed revolutionary organisation in Dublin. This organisation, founded on 17 March 1858, was later to become known as the Irish Republican Brotherhood (I.R.B).

Turlough O'Carolan, was a blind Celtic harper, composer and singer in Ireland whose great fame is due to his gift for melodic composition.

James O'Donnell (1774–1830) was a noted Irish-American architect in New York City and Montreal.

John Barry was an Irish-American officer in the Continental Navy during the American Revolutionary War and later in the United States Navy. He has been credited as "The Father of the American Navy" and was appointed a captain in the Continental Navy on December 7, 1775. He was the first captain placed in command of a U.S. warship commissioned for service under the Continental flag.