Peter Frederick Weller is an American actor and television director.

He has appeared in more than 70 films and television series, including RoboCop (1987) and its sequel RoboCop 2 (1990), in which he played the titular character; The Adventures of Buckaroo Banzai Across the 8th Dimension (1984); and Star Trek Into Darkness (2013).[1] He appeared in such films as Woody Allen’s Mighty Aphrodite (1995), the Oliver Stone-produced The New Age (1994), and David Cronenberg’s adaptation of William Burroughs’s novel Naked Lunch (1991).

In addition to a Saturn Award nomination for his RoboCop role, he received an Academy Award nomination for his 1993 short Partners, in which he also acted. In television, he hosted the program Engineering an Empire on the History Channel from 2005 to 2007. He played Christopher Henderson in the fifth season of 24, Stan Liddy in the fifth season of the Showtime original series Dexter, and Charles “Charlie” Barosky in 11 episodes in the sixth season of Sons of Anarchy. From 2012 to 2017, he was involved in the A&E (now Netflix) series Longmire as a director and actor. In 2017, he appeared on The Last Ship as Dr. Paul Vellek. He reprised his role as RoboCop by providing his voice for Mortal Kombat 11 in 2019 and RoboCop: Rogue City in 2023.

He holds a Ph.D. in Italian Renaissance Art History from UCLA.