"The Catalyst" is a song by American rock band Linkin Park. Released on August 2, 2010, it is the first single from their fourth studio album, A Thousand Suns, which was released on September 8, 2010. The music video for the song, directed by the band's turntablist Joe Hahn, was released on August 26, 2010.

"The Catalyst" is used in the trailer and credits of the video game Medal of Honor and also the opening song of Namco-Bandai's Arcade game, Mobile Suit Gundam: Extreme Vs.. It was also used in select commercials of the Discovery Channel series, Surviving the Cut. The song was also featured in the video game Linkin Park Revenge for the iPhone, iPad, and iPod Touch. "The Catalyst" has also been used in the advertisement for the 2011 movie The Lincoln Lawyer with Matthew McConaughey.

"The Catalyst", along with five other songs from A Thousand Suns, are featured in the "Linkin Park Track Pack" as downloadable content for the rhythm video game Guitar Hero: Warriors of Rock. The track pack was released on October 19, 2010.

It received mostly positive reviews from most professional critics.

From July 9, 2010 until July 25, 2010, Linkin Park (in collaboration with MySpace.com) held the contest "Linkin Park, Featuring You". In this contest, fans could download stems from the album's first single, "The Catalyst", remix the stems and/or write their own parts for the song on any instrument. The winner of this contest was Czesław "NoBraiN" Sakowski from Świdnica, Poland, whose remix was featured as an additional downloadable track on the Best Buy version of A Thousand Suns, and also available on Napster. The liner notes for A Thousand Suns also credit Sakowski with "Supplemental Programming" on "When They Come for Me", the album's fifth track.

The top 20 remixes that were selected by the band are being considered for future use as b-sides and online downloads, as seen in the "Linkin Park, featuring YOU Winner" episode of the band's LPTV series. Two of the remixes (by DIGITALOMAT and ill Audio) have since been released as via the band's webpage as free mp3 downloads, while two others (by Cale Pellick and DJ Endorphin) have been released via the iTunes EP version, released exclusively in Europe.

"The Catalyst" has also been featured in the trailer of the video game Medal of Honor, which premiered on August 1, 2010 and was directed by Joe Hahn. It was also featured in the game's end credits. The song was also featured in commercials of Discovery Channel's Shark Week in the summer of 2010. It was also used during the 16th annual X Games competition. On September 15, 2010, Warner Music Japan announced that the song will be the official theme song of Mobile Suit Gundam: Extreme Vs.

On August 31, 2010, it was announced that the band would perform the single live for the first time at the 2010 MTV Video Music Awards on September 12, 2010. The venue of the debut live performance was Griffith Observatory, an iconic location used in Hollywood Movies. However, the venue was held secret until the performance but was revealed to be a prominent landmark of Los Angeles. (wiki)