Peter Murnik (born December 14, 1965) is an American actor with roles in Justified, JAG, , Martial Law, and ER. He also had a role in the 1998 movie Hard Rain.
Murnik was born in Concord, Massachusetts. He attended Boston University.
Murnik had a role as Lt. Martel in the two-part Seinfeld episode "The Trip". In that his character investigated a murder case in Los Angeles and arrested Kramer as the serial killer, but eventually let him go after a long interrogation that put Kramer in tears. He was a main character in the BYUtv series, Granite Flats.