William Dwight Schultz (born November 24, 1947) is an American television, film and voice actor.

He is known for his roles as Captain "Howling Mad" Murdock on the 1980s action series The A-Team and as Reginald Barclay in the Star Trek franchise.

He appeared in several films, including The Fan (1981), and he starred in Fat Man and Little Boy (1989) as J. Robert Oppenheimer.

He played in the 1992 television film Child of Rage, starring opposite Mel Harris as a compassionate couple who adopt a troubled girl who has been sexually abused.

[5] Schultz hosted a conservative talk-radio podcast called Howling Mad Radio which ended in March 2009.