Patrick O'Kane is an Irish actor who was born in 1965 in Belfast, Northern Ireland. He has been part of the companies of the Royal National Theatre and the Royal Exchange Theatre, Manchester. He has appeared in London's West End and at the Abbey Theatre in Dublin. In addition to his extensive stage work, O'Kane has appeared in movies and on television in many parts.

He won a Nesta Fellowship in 2005 and has released a book "Actor's Voices" a series of conversations with modern actors (Oberon Press 2012). He has also been in season 2 of HBO series Game of Thrones, playing the new face of Jaqen H'ghar.