The Greatest is a song by Australian singer Sia featuring American rapper Kendrick Lamar. The single was released on 5 September 2016 as the third single from the deluxe edition of her seventh studio album, This Is Acting (2016). The song was written by Sia, Lamar, and Greg Kurstin, who also produced the track.
The music video for the single features dancer Maddie Ziegler, together with 48 other young dancers, and was directed by Sia and Daniel Askill. Although Sia has not provided an interpretation of the story of the video, numerous media outlets have concluded that it is a tribute to the 49 victims of the 2016 Orlando nightclub shooting.
Commercially, the single has reached the top five in several countries, including Australia, Switzerland and the United Kingdom.