Tony Slattery is a British actor and comedian.

Slattery was born in Stonebridge, London. In his youth, he represented England at under-15 judo. He studied Mediaeval and Modern Languages at Cambridge University, where he also became a member of the Cambridge Footlights. Like his contemporaries Stephen Fry and Hugh Laurie, he became a staple of the British television comedy circuit.

He was a regular on Whose Line Is It Anyway?, starred in his own improvisational comedy series S&M alongside Mike McShane, and has appeared on other panel quizzes such as Have I Got News For You. He was a regular on the TV version of the quiz show Just a Minute and was also on the radio version several times.

As a serious actor he has appeared in The Crying Game, Peter's Friends, and The Wedding Tackle. He appeared on the London stage in the musicals Me and My Girl and Radio Times and in the play Neville's Island. At the end of the 1980s, he became a film critic, presenting his own show on British television, Saturday Night at the Movies. He also appeared in the ITV sitcom That's Love with Jimmy Mulville.

In the mid-1990s he suffered what he described as a 'mid-life crisis' which culminated in 1996 with a six-month period of reclusiveness, during which he did not answer his door or telephone, "or open bills, or wash", he says. "I just sat". Eventually, one of his friends broke down the door of his flat and convinced him to go to hospital. Now recovered, he has returned to presenting on British cable television. In January 2005 he appeared in the TV Movie Ahead of the Class with Julie Walters.