Dallas Mark Roberts (born May 10, 1970) is an American stage and screen actor.
Roberts was born in Houston, Texas. He is a graduate of Juilliard. He is primarily based in New York City, where he regularly appears in theatrical productions. Off-Broadway he has appeared in a revival of Lanford Wilson's Burn This, opposite Edward Norton and Catherine Keener; in Adam Rapp's Nocturne, for which he was nominated for a Drama Desk Award; and in Caryl Churchill's A Number, opposite Sam Shepard and later Arliss Howard, among others. He was slated to make his Broadway debut as Tom Wingfield in a revival of Tennessee Williams' The Glass Menagerie opposite Jessica Lange and Josh Lucas, but was replaced by Christian Slater during rehearsals
Roberts' film work includes the screen adaptation of Michael Cunningham's A Home at the End of the World, opposite Colin Farrell and Robin Wright Penn, and supporting roles in Walk the Line and The Notorious Bettie Page, among others. He also had a recurring role on the Showtime drama The L Word.