John O’Callaghan has performed in Canada, Ireland and the USA and is a citizen of all three. He left home at 17 to work for BMW in Munich, Germany. After falling asleep many times on the factory floor he decided to study Computer Science at the University of Ulster in Belfast. He fell in with the wrong crowd and started to act with Belfast Youth and Community Theatre – a company to unite protestant and catholic actors. They toured Ireland with the play CASTLE RACKRENT. The New Theatre School followed in Boston, Massachusetts. After graduation he pursued his craft in Toronto. He quickly became a member of Canadian Actors Equity after playing the role of One Shotr Dunphy (Rapist/Terrorist) in CAROLANS FAREWELL.

After building up an impressive resume he moved to NEW YORK CITY to star in the one man show RUM & VODKA written by Conor Mcpherson. This was a huge success and led to recordings for HBO and NBC. And after several Regional (including The Cleveland Playhouse) and Off Broadway successes (La Mama, The Irish Repertory Theatre, Primary Stages, Manhattan Theatre Club, etc,) and landing the same agent as Jack Nicholson he moved WEST to Los Angeles where actors go to die. John travels between Los Angeles, New York, Toronto and Vancouver. His life resembles a circus at times as he travels with his son Odin and dog Charlie.

John has just completed the sold out hit LADIES AND GENTS in the toilets of Central Park, NYC. Before that in NYC he starred in Howie The Rookie by Mark O’Rowe at the Irish Arts Centre, directed by the Emmy Award Winner Nancy Malone. The show was also a sold out hit in Toronto and Los Angeles. He has also been playing the recurring role of Stephen Dedalus in Bloomsday on Broadway and in Toronto.

In Toronto he recently played the gigolo Anatol in the classic The Affairs of Anatol by Arthur Schnitzler. This play went on to inspire ALFIE and Eyes Wide Shut. He created the role of Declan in Ladies Night – The Live Full Monty – where he stripped to hundreds of screaming women that all looked like his mother.

He joined the sci-fi world by recurring as Niam on the TV Series Startgate Atlantis – which shoots in Vancouver – where he plays an Ancient Replicator. He originated the role of GODZILLA in Crow’s production of the most successful play ever in Japan - GODZILLA by Yasuhiko Ohashi.

He starred in Martin McDonagh’s The Lonesome West at The Odyssey Theatre (Los Angeles). He performs regularly with California’s Artists Radio Theatre.

Premieres include prolific writers such as Marina Carr, Conor McPherson, Mark O’Rowe, Imelda O’Reilly, Yasuhiko Ohashi – to name few.

Other Film and TV credits include Joyce Carol Oates We Were The Mulvaney’s, CBS The Agency with Beau Bridges, the Independent hit Clutch, the CBS movie of the week Deep In My Heart with Anne Bancroft, Haven’t We Met Before with Nicolette Sheridan and Marin Scorsese's Gangs of New York. He most recently completed the mini series ZOS Zone of Separation.

John O’Callaghan is a Father, Actor, Writer, Director and Producer and believes himself to be a citizen of the world.