Peter Hermann lived in Germany until he was age 10. He was later educated at Yale University.
He met his wife Mariska Hargitay, on the set of Law & Order: Special Victims Unit(1999).
Before becoming an actor, Peter taught ESL and Special Ed as part of Teach For America Program. After that, he became a fact checker at Vanity Fair.
He speaks four languages: English, German, Spanish, and French.