"Going Under" is a song by American rock band Evanescence. It was released on September 9, 2003, as the second single from their debut album Fallen. It was written by Amy Lee, David Hodges and Ben Moody, while production was handled by Dave Fortman.

The song contains rock and metal influences among others and its main instrumentation consists of drums and guitars built around Lee's soprano vocals. The song received mixed to positive reviews from music critics. While failing to chart on the Billboard Hot 100, "Going Under" peaked at number 5 on the Billboard Alternative Songs chart. It charted in the top forty in every country and it was certified Platinum by the Australian Recording Industry Association.

The music video for the song was directed by Philipp Stölzl and it was filmed in May 2003 in Germany. It shows Lee performing on a concert along with the band, while fans are turning into zombies. She designed both of the dresses she wears in the video. It ranked at number 4 on the list of "The 15 Scariest Music Videos Ever" published by Billboard. Evanescence additionally added the song to the set-list on their Fallen and The Open Door Tour.

"Going Under" was written by Amy Lee, David Hodges and Ben Moody, while production for the song was handled by Dave Fortman. It was the last song written for Fallen although a demo version was recorded before the release of Fallen, and it featured a slightly different sound in the music and Lee's vocals. An acoustic version was recorded shortly after the release of Fallen, along with several other songs. According to Amy Lee, "Going Under" is about recovering from an abusive relationship, which she has stated in a number of interviews. In an interview with MTV News, Lee further explained the meaning and the inspiration behind the song,

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