"Never Say Never" is a song by Canadian singer Justin Bieber. The song is used as the theme song for the 2010 film The Karate Kid, and features a rap verse from its star, Jaden Smith. Originally a risque demo with sexual lyrics performed by Travis Garland, it was written and produced by The Messengers, and Omarr Rambert. However, Bieber was tapped to record the song for the film. He re-wrote the song with the original artists along with Smith and his vocal producer Kuk Harrell, to feature inspirational lyrics to foil the film's theme.

The Karate Kid is a 2010 martial arts drama film directed by Harald Zwart and produced by Jerry Weintraub, Will Smith, Jada Pinkett Smith, James Lassiter, and Ken Stovitz, from a screenplay written by Christopher Murphey, based on a story conceived by Robert Mark Kamen, the writer of the first three Karate Kid films. It serves as the fifth film in The Karate Kid franchise, and stars Jaden Smith and Jackie Chan in the lead roles, with Taraji P. Henson, Wenwen Han, Zhenwei Wang, Luke Carberry, Zhensu Wu, Zhiheng Wang, and Yu Rongguang in supporting roles. While serving as a remake and following a similar narrative as the original The Karate Kid film from 1984, with the setting moved to China, and the martial art changed from karate to kung fu, the film is set in the same fictional universe as the previous films, retroactively serving as a standalone sequel to The Next Karate Kid (1994).