Sport Relief was a biennial charity event from Comic Relief, in association with BBC Sport, established in 2002.

It was the idea of Kevin Cahill, CBE, who had joined Comic Relief in 1991 to establish a new department as Director of Education and Communications and went on to become its creative director and CEO. Now joint Honorary Life President with Sir Lenny Henry, Cahill joined having created the Education Department at the National Theatre in London and been its first Head.

In 2021, Comic Relief announced that from 2022 it was changing from alternating Sport Relief and Red Nose Day campaigns to Red Nose Day becoming annual and Sport Relief evolving into a year-round brand. The annual Red Nose Day telethon would now take place at Dock10, MediaCityUK in Salford.