Ciarán Sheehan is an Irish-born actor who has appeared in several Off-Broadway and Broadway theatre productions.

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He made his Broadway debut in Les Misérables, playing Babet and understudying Marius Pontmercy. In 1993, he joined the cast of The Phantom of the Opera, where he played Raoul, Vicomte de Chagny and understudied the title character, he left the cast in 1995. He reprised the title role in the Canadian production in 1995 and 1996 where he was the principal actor of the role.

He has worked with the Irish Repertory Theatre as an actor appearing in Frank McCourt's The Irish… and How They Got That Way, The Hostage, Camelot, and Finian's Rainbow. As a producer he was the lead producer of the musical The Molly Maguires directed by Sheryl Kaller.^{[citation needed]}

His work as Billy in the Boston production of Carousel gained him multiple best actor nominations,^{[citation needed]} and his work as Wolfe Tone in Peter Danish's The Final Days of Wolfe Tone in Nashville, Tennessee also received multiple best actor nominations.^{[citation needed]} In film, he has won a best actor award from the NY International Film Festival for his role in The Waiting Room.^{[citation needed]} He is due to be seen in the Deborah Markowitz film The Only Woman In The World in March 2022 when it makes its world premiere.^{[needs update]}

Currently^[when?] he is touring internationally with the group The Four Phantoms In Concert.^{[citation needed]}