Fat Friends (also known as Kay Mellor & Jimmy Perry’s Fat Friends) was a British drama that aired on ITV from 12 October 2000 to 24 March 2005, consisting of 25 episodes over four series. Set in Leeds, the series explores the lives of several slimming club members, with a focus on the various ways their weight has impacted upon them.

The series was created by Kay Mellor and Jimmy Perry and made by Rollem Productions in association with Tiger Aspect Productions and Yorkshire Television. Four of the cast – Ruth Jones, James Corden, Sheridan Smith and Alison Steadman – went on to appear in the sitcom Gavin & Stacey. Jonathan Ryland who played Kevin, the husband to Ruth Jones' character also appeared in Gavin and Stacey as the celebrant who presided when Pete and Dawn renewed their wedding vows.