Ken Lerner (born May 27, 1948) is an American television, stage and film actor who is perhaps best known for playing "Principal Flutie" in the first episodes of the television series Buffy the Vampire Slayer.

Lerner was born in Brooklyn, New York, the son of Blanche and George Lerner, who was a fisherman and antiques dealer. He is a graduate of Brooklyn College and the brother of fellow actor Michael Lerner.

He is well known for playing whiny or unlucky characters, like the agent whom Arnold Schwarzenegger stabs in the back with a pen in The Running Man.

As of 2011, Lerner can be seen in an American nationally televised commercial for Wells Fargo Bank. Starting in late 2013, Lerner is now starring in a commercial for T-Mobile USA.