List of Famous people with last name O-leary

Terence Thomas Kevin O'Leary is a Canadian businessman, author, politician, and television personality. From 2004 to 2014, he appeared on various Canadian television shows, including the business news programmes SqueezePlay and The Lang and O'Leary Exchange, as well as the reality television shows Dragons' Den and Redemption Inc. In 2008, he appeared on Discovery Channel's Project Earth. Since 2009, he has appeared on Shark Tank, the American version of Dragons' Den.

Michael Kevin O'Leary is an Irish businessman who is the CEO of Ryanair. With a net worth of around €848.6 million as of April 2018, he is one of Ireland's wealthiest businessmen.

Sean Dermot Fintan O'Leary Jr. is an English television presenter and radio DJ who currently works for ITV and BBC Radio 2. His radio career began when he worked as a disc jockey at Essex Radio, but he is best known for being the presenter of The X Factor on ITV, a position he has held every year since 2007 with the exception of 2015, during which he stepped down to pursue other ventures.

David Anthony O'Leary is an Irish football manager and former player. His managerial career began at Leeds United, and later he managed Aston Villa. He most recently worked as the manager of Al-Ahli Dubai. The majority of his 20-year playing career was spent as a central defender at Arsenal. O'Leary's tally of 722 appearances for the North London side stands as a club record.

Major Michael John O'Leary VC was an Irish recipient of the Victoria Cross, the most prestigious award for gallantry in the face of the enemy that can be awarded to British and Commonwealth forces. O'Leary achieved his award for single-handedly charging and destroying two German barricades defended by machine gun positions near the French village of Cuinchy, in a localised operation on the Western Front during the First World War.

Nicklaus O'Leary is an American football tight end for the Las Vegas Raiders of the National Football League (NFL). He was drafted by the Buffalo Bills in the sixth round of the 2015 NFL Draft. He played college football at Florida State.

Daniel Florence O'Leary was a military general and aide-de-camp under Simón Bolívar.

William O'Leary is an American actor.

Matthew Joseph O'Leary is an American actor. He made his debut in the made-for-television Disney Channel Original film Mom's Got a Date with a Vampire, and would go on to star in the thriller Domestic Disturbance (2001) opposite John Travolta. He also had supporting roles in Frailty (2001), and the independent neo-noir film Brick (2005).