Jack Gleeson was born in Cork, Ireland. He started acting at the age of seven in the Independent Theatre Workshop. Gleeson’s first roles in feature films were minor roles in Batman Begins (2005), Shrooms (2007) and A Shine of Rainbows (2009). In 2010 he appeared in a leading
role in Alicia Duffy’s All Good Children. The reviewer for the Variety magazine considered Gleeson “the pic’s big discovery”.
Jack stars in HBO’s Game of Thrones as Joffrey Baratheon a role he has enthralled TV audiences with since July 2009 as part of the initial starring cast and remains a member of the cast for the second,third and fourth seasons. He cites Joaquin Phoenix as Commodus in Gladiator as an influence on his portrayal of Joffrey. Gleeson is a student of Trinity College, Dublin, and a member of DU Players. In 2012, he was awarded a scholarship at TCD. Jack has indicated an intention to pursue an academic career rather than a professional acting career, once his work on Game of Thrones is completed.
Gleeson is also one of the founders and artistic director of Collapsing Horse Theatre Company, which is based in Dublin.  Collapsing Horse Theatre Company – devising collective Collapsing Horse is a new theatre collective comprised of four scholarly gentlemen, whose aim is to inspire and entertain. Founded with an interest in puppetry, music, design and comedy, the group operates as a devising collective, with the aim of producing aesthetically unified and thoughtful comedic theatre. Puppetry, musicianship, physical comedy and scripting co-mingle and inform each other from the beginning; they comprise the sinewy tendons and milky bones that cause this wonderful and powerful theatre to burst forth like some mad clopping beast.

Collapsing Horse also features Writer: Eoghan Quinn / Puppeteer: Aaron Heffernan / Design: Colm McNally / Music :
Danny Forde / Performer/Ass. Producer: Jack Gleeson / Producer: Matthew Smyth

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