Kevin Sussman is an American actor and comedian.

Kevin Sussman played Walter on the ABC comedy-drama Ugly Betty and Stuart Bloom on the CBS sitcom The Big Bang Theory.

Starting with the sixth season of The Big Bang Theory, he was promoted to a series regular.

Kevin Sussman got his start in commercials, playing geeks or nerds during the dot-com boom for companies like FedEx.

In 1999, Kevin Sussman made his film debut in Liberty Heights as Alan Joseph Zuckerman.

Kevin Sussman moved to Los Angeles when he was cast in Ugly Betty and played the character Stuart Bloom on The Big Bang Theory from 2009 to the series end in May 2019.

In 2011 and 2012, Kevin Sussman worked with The Big Bang Theory co-star John Ross Bowie to create two television comedies: The Ever After Part (FOX) and The Second Coming of Rob (CBS).

Kevin Sussman also portrayed Kevin in one episode of The Sopranos.