"Oh My God" is a song by Guns N' Roses released in 1999 on the soundtrack to the film End of Days. The song was sent out to radio stations in November 1999 as a promo for the soundtrack and the band. Despite being the band's first recorded release in almost five years, it was never issued as a stand-alone single for public retail.

In a press release, Axl Rose gave details about the song:

"The chorus deals with the societal repression of deep and often agonizing emotions -- some of which may be willingly accepted for one reason or another -- the appropriate expression of which (one that promotes a healing, release and a positive resolve) is often discouraged and many times denied. Emotionally the song contemplates several abstract perspectives drawing from personal expression as well as from the film and its metaphors. The appropriate expression and vehicle for such emotions and concepts is not something taken for granted.

The fight of good vs. evil, positive vs. negative, man against a seemingly undefeatable, undeterrable, unrevealed destiny, along with the personal and universal struggle to attain, maintain and responsibly manage freewill can be and often is frustrating to say the least. In America our country's constitutional right to freedom of expression gives us a better chance to fight for that expression than many in other countries enjoy. It can be a big gig, like kickin' the crap outta the devil!"

The song was primarily written by Paul Tobias around 1997.Dizzy Reed wrote the hook of the chorus. Rose claimed that former members Duff McKagan and Matt Sorum 'failed to see the potential' of the song and had no interest in recording or playing the piece.

Paul Tobias, Gary Sunshine and Dave Navarro all play on the song. Robin Finck's part was written by Tobias and 'extensively manipulated' by producer Sean Beaven. Rose claimed that Finck was not involved in the writing of the final recording, although he participated in the arrangement. Finck denies he was involved with the song, despite Rose's claim.

Rose wrote the lyrics to the song, and additional programing was performed by engineer Stuart White. The song debuted in a commercial for the film during the 1999 MTV Video Music Awards, and was featured in trailers for the film leading up to its release. According to sources, Rose, Jimmy Iovine and several studio technicians stayed up all night adjusting the final mix before it was due.

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