Keith McErlean is an Irish actor.

Born in Carndonagh, County Donegal, his career began when he graduated from the Gaiety School of Acting in June 1998. He has appeared in many plays for the Abbey Theatre and Peacock Theatre including Making History, Lovers at Versailles and Tartuffe.

In 2004, he played homosexual AIDS sufferer Declan Breen in the film The Blackwater Lightship for CBS, adapted from Colm Tóibín's original novel. In 2006, he played Vernon Todmann in the movie Flyboys opposite James Franco and Jean Reno. He is best known as Barry in all three series of Bachelors Walk for RTÉ. From 2008 - 2013, he appeared in the RTÉ series Raw playing the character of Shane Harte, in which he was nominated for outstanding actor in a TV drama at the 49th Monte-Carlo Television Festival. He played Adam Lynch in the critically acclaimed TV series "Trivia", and received a nomination for a Golden Nymph at the 51st Monte Carlo Television Festival, this time for Outstanding Actor in a Comedy Series.