Charley Lang (born October 24, 1955 Passaic, New Jersey, USA) is an actor from Passaic, New Jersey who played Lieutenant junior grade Duffy in the Star Trek: The Next Generation third season episode "Hollow Pursuits".
Lang made his film debut in 1988's Bird, in which Hamilton Camp, Bill Cobbs, Tony Todd, and VOY star Tim Russ also appeared. The following year, he appeared in the Perry Mason TV movie The Case of the Lethal Lesson with Brian Keith and Mark Rolston. In 1992, he appeared opposite Virginia Madsen, Chris Sarandon, Lenore Kasdorf, Bruce Gray, and VOY's Robert Picardo in TV's A Murderous Affair: The Carolyn Warmus Story, and the next year, he appeared in the sci-fi film Fire in the Sky with Scott MacDonald, Noble Willingham, and Bruce Wright. He was also in the comedy California Myth (released in 1999), which was Bibi Besch's last film before her death in 1996. Wren T. Brown, Don Stark, and Warren Munson also appeared in this film.