Dermot Crowley is an Irish stage, film and television actor.

The Weir is a play written by Conor McPherson in 1997. It was first produced at The Royal Court Theatre Upstairs in London, England, on 4 July 1997. It opened on Broadway at the Walter Kerr Theatre on 1 April 1999. As well as several other locations in the UK and the U.S., the play has been performed in Ireland, Germany, the Czech Republic, Slovenia, Australia and Canada.