Sean Lock (born April 22, 1963) is an English comedian.
Born in Woking, Surrey, he began his career in comedy as a stand up comedian. As such, he won the British Comedy Award in the category of Best Live Comic, and was nominated for the Perrier. He also wrote material for such comics as Bill Bailey, Lee Evans and Mark Lamarr.
He became the first comedian to perform at Wembley Arena due to the fact he was supporting Rob Newman and David Baddiel - who were widely reported as being the first to have done this.
Later in his career he has gravitated toward work on television. In 2004, he starred in the BBC sitcom 15 Storeys High. In 2005 and 2006 he was a regular team captain on the panel game 8 Out of 10 Cats, and has appeared on the comedy quiz programme QI.
In spring 2006, he hosted his own entertainment show on Channel 4 called TV Heaven, Telly Hell, and also guested on the World Cup special edition of They Think It's All Over.