Major Lazer is a musical project by DJ/Producer Diplo. Formerly a collaboration along with DJ/Producer Switch, they parted ways in late 2011.

Made up of DJs Diplo and Switch, the two were introduced after working with M.I.A.. The duo's first album Guns Don't Kill People... Lazers Do was released on June 16, 2009, on Downtown Records. It was recorded in Jamaica at Tuff Gong Studios. Vocalists such as Santigold, Vybz Kartel, Ward 21, Busy Signal, Nina Sky, Amanda Blank, Mr. Vegas, Turbulence, Mapei, T.O.K, Prince Zimboo, Leftside and others contribute guest vocals to the album, as well as additional production from Afrojack and Crookers. This is the first release to come out of the label partnership between Downtown Records and Diplo's label Mad Decent. Major Lazer ended a US tour last summer. The album's first single was "Hold the Line", the video for which, directed by Ferry Gouw, was nominated for a MTV Video Award in the Breakthrough Video category. "Hold the Line" was also featured in the video game FIFA 10. The track "Zumbie" has a music video that features comedian Andy Milonakis. Music videos for the songs "Pon de Floor" and "Keep It Going Louder" were both directed by Eric Wareheim. Major Lazer performed at the Falls Music & Arts Festival (Lorne, Victoria, Australia) on the December 30, 2009, the Coachella Music Festival in April 2010[6] they also performed at the Pitchfork Music Festival in July 2010 and the Sasquatch Music Festival on Monday May 30, 2011. Live visuals were created by Pomp&Clout. Major Lazer performed at the 2011 Outside Lands festival in San Francisco.

A mixtape with La Roux entitled "Lazerproof" was made available for free download on May 26. Diplo posted cover art on his Twitpic. It is the character Major Lazer in War Machine's silver suit, Elly Jackson of La Roux in the signature Iron Man suit, and Whiplash, the villain in the Iron Man 2 movie.

On June 20, 2010, the group released an EP titled "Lazers Never Die". It contained two new songs and three remixes, by Thom Yorke and others.

Major Lazer's live shows previously included hype man Skerrit Bwoy[8] although Skerrit Bwoy left the group in 2012 to pursue religion.

Switch provided production for Beyoncé's "Run the World (Girls)", which sampled "Pon de Floor".

Switch has left the collaborative effort due to "creative differences" as claimed by Diplo. He departed in late 2011. Diplo is now the sole producer behind the project.