"Champion" is a song by American rock band Fall Out Boy, released on June 22, 2017 in the US and on June 23 worldwide through Island Records and DCD2. It was released as the second single from their seventh studio album, Mania.

Fall Out Boy is an American rock band formed in Wilmette, Illinois, a suburb of Chicago, in 2001. The band consists of lead vocalist and rhythm guitarist Patrick Stump, bassist Pete Wentz, lead guitarist Joe Trohman, and drummer Andy Hurley. The band originated from Chicago's hardcore punk scene and was formed by Wentz and Trohman as a pop-punk side project; Stump joined shortly thereafter. The group went through a succession of drummers before Hurley joined. Their debut album, Take This to Your Grave (2003), became an underground success and helped the band gain a dedicated fanbase through heavy touring. Take This to Your Grave is cited as influential on pop-punk music in the 2000s.