LSD is a supergroup consisting of British musician and rapper Labrinth, Australian singer-songwriter Sia and American music producer Diplo.

On 11 March 2018, Diplo posted, to Instagram, a photo of a cassette tape with the letters "LSD" marked on it; in the caption, he tagged Sia and Labrinth.

[6][8] The following day, Diplo revealed that LSD was formed when he was invited to write a song with Labrinth and Sia.

[9] Diplo said: "Originally, I wasn't in [LSD] and then our publisher had the idea to throw me in there; those two artists, together, are two of the craziest, most creative people I ever met in my life.

[15] The album, Labrinth, Sia & Diplo Present... LSD, was released on 12 April 2019 through Columbia Records.