"Burn" is an R&B-ballad song written by American singers-rappers and songwriters Usher, Jermaine Dupri and Bryan-Michael Cox. The song was produced by Dupri and Cox for Usher's fourth studio album Confessions (2004). "Burn" is about breakup in a relationship, and the public referred to it as an allusion to Usher's personal struggles.

Originally planned as the album's lead single, "Burn" was pushed back after favorable responses for the song "Yeah!". The song was released as the second single from the album in July 2004. The single topped various charts around the world, including the Billboard Hot 100 for eight non-consecutive weeks; however, it failed to attain the same success of its predecessor. "Burn" was certified platinum in Australia and gold in New Zealand and United States. The song was well-received by critics and garnered award nominations.

When Usher planned to make a new record after his third album, 8701, he decided to not branch out that much with musical collaborators and continue building music with his previous producers. Usher again enlisted record-producer Jermaine Dupri, who had collaborated on his two previous albums, along with The Neptunes, R. Kelly, among others to work on his fourth studio album Confessions. Dupri contacted his frequent collaborator Bryan-Michael Cox, who had also made hits like the 2001 single "U Got It Bad" for Usher. During the early session for the album, Dupri and Cox talked about a situation which later became "Burn". At that time, Usher's relationship with his two-year relationship with TLC's Chilli was flaming out.They said, "Yo, you gotta let that burn... That's a song right there", and started writing.