Marshall R. Teague (born April 16, 1953) is an American film and television actor known for his balance of starring roles with powerful supporting characters, allowing him to build a varied and pivotal body of work.

At age nine, he spent time with relatives throughout Asia, where he began a passion for the martial arts training in Korean Kuk Sool Won Hapkido.

He was Walker's first nemesis in the pilot episode "One Riot, One Ranger", "Payback", "Codename: Dragonfly", "Last of a Breed Parts 1 & 2", "Fight or Die", "The Final Showdown 1 and 2" last TV film Trial by Fire.

He was a series regular on television in the soap opera Days of Our Lives as Leonard Stacy in 1984, as Brian McCord in 1985, and Colin Lawson in 1989.

He appeared in the action sci-fi (TV series) Super Force as Frank Stone and the military drama Pensacola: Wings of Gold as Major to Colonel Drayton.

He also portrayed the real-life love interest (Mike Stone) in Priscilla Presley's biographical story (TV movie) Elvis & Me as character Rick Colten.