James Thomas Denton, Jr. (born January 20, 1963) is an American film and television actor, best known for playing Mike Delfino on the US television show Desperate Housewives.

Denton was born in Nashville, Tennessee and grew up in Goodlettsville, Tennessee, the son of J. T. Denton, a dentist who served in the military. He attended the University of Tennessee where he was a member of the Sigma Alpha Epsilon fraternity, majored in television/journalism and earned a degree in advertising. Before he became an actor, he sold advertising for two radio stations. He began acting at 23, at a community theater in Nashville. He eventually moved to California to become a full time actor.

He has been a regular cast member on the television show Desperate Housewives, where he plays the role of Mike Delfino, a plumber who lives on Wisteria Lane and ex-husband of Susan Delfino for five seasons now. He had previously been a regular on several television series, including the movie Australia, The Pretender, JAG, Philly, The Drew Carey Show, Reba and Threat Matrix. As well he has guested on Sliders, Two Guys, a Girl and a Pizza Place, Ally McBeal and The West Wing.