Pain

"Pain" is a song by the Canadian rock band Three Days Grace. It was released on September 19, 2006, as the second single from their second studio album, One-X. The song topped the Canada Rock, as well as the US Mainstream Rock and Alternative Airplay charts. It was certified Platinum by Music Canada in February 2018 and 4× Platinum by the Recording Industry Association of America in November 2025.

There are three versions of the song "Pain". The first version is the album version of song. The second version is an acoustic version of the song that is available for download along with an acoustic version of "Animal I Have Become" and the main version of "Pain". It is included on the Pain EP, a digital exclusive release.