Trevor Elias Einhorn (born November 3, 1988) is an American actor.
Einhorn was born in Los Angeles, California. He attended Pressman Academy in Los Angeles as well as El Rodeo School and Beverly Hills High School (2002–2006), both in Beverly Hills, California.
Einhorn is most famous for his recurring role as Frederick Gaylord Crane on the American sitcom Frasier and as a young sex-driven patient of Berg's in Two Guys and a Girl. In the movie BASEketball he played the role of Joey Thomas. He also played the role of Henry Walker on Sons & Daughters. He made an appearance in an episode of The Office as Justin Polznik, a student interested in an internship at Dunder Mifflin until Michael Scott drives him away.
Einhorn has also most recently appeared in a television commercial for Acer laptops alongside Kiefer Sutherland, named "Dynamite Cupcakes", and in the sixth and seventh seasons of Mad Men, as copywriter John Mathis.