Peter Hermann (born 15 August 1967 in Greenwich, Connecticut) is an actor perhaps more famous for his marriage to actress Mariska Hargitay than for his acting. They met on the set of Law & Order: Special Victims Unit, where Hargitay has enjoyed a starring role since the show's beginning in 1999. Hermann often appears on the show as defense attorney Trevor Langan. The two were married on August 28, 2004, in California.
Hermann also had a brief stint on the soap opera Guiding Light and a few commercials (such as the anti-tobacco "Fair Enough" ads) to his credit.