Mike O`Malley is an American actor and playwright who has appeared in films and television series. He starred in the CBS comedy Yes, Dear. Prior to Yes Dear, he had a short-lived, self-named sitcom on NBC called The Mike O`Malley Show, in which he co-starred with his sister Kerry O`Malley, and also played the central character of short-lived WB sitcom Life with Roger. As of 2010, O`Malley has recurring roles on two television series: Glee and Parenthood.

O`Malley made his movie debut in the 1998 film Deep Impact, playing Elijah Wood’s astronomy teacher. He followed that with a supporting role in the John Cusack/Billy Bob Thornton film about air traffic controllers called Pushing Tin. In 2000, he portrayed Oliver, a sex addict, in the Sandra Bullock rehab film 28 Days. In 2005, O`Malley starred in the Heather Locklear/Hilary Duff film The Perfect Man.

In 2007, he supplied supporting roles in the George Clooney film Leatherheads and the Eddie Murphy film Meet Dave. O`Malley was one of the people interviewed in the film City of Champions: The Best of Boston Sports. In 2009, O`Malley participated in the American documentary film The People Speak. In the film, he performed in a segment with political activist Staceyann Chin.