"The World's Greatest" is a song written and performed by American R&B singer R. Kelly.

The song was originally featured on the soundtrack to the film Ali,[1] and also appeared on bootleg copies of Kelly's unreleased album, Loveland, which later became a bonus disc to Chocolate Factory.

[2] Released as a single in November 2001, "The World's Greatest" became a hit in Europe, reaching number two in the Netherlands, number four in the United Kingdom, and the top 20 in nine other European countries.

Kelly is a boxer in this video, playing the part of Muhammad Ali, as this song was originally a tribute to him.

There is no color in the video except for red, the hue of Kelly's boxing clothes.