The Orb is an English electronic music group founded in 1988 by Alex Paterson and Jimmy Cauty. Known for their psychedelic sound, the Orb developed a cult following among clubbers "coming down" from drug-induced highs. Their influential 1991 debut album The Orb's Adventures Beyond the Ultraworld pioneered the UK's nascent ambient house movement, while its UK chart-topping follow-up U.F.Orb represented the group's commercial peak.

Beginning as ambient and dub DJs in London, the Orb's early performances were inspired by electronic artists of the 1970s, most notably Brian Eno, Cluster, and Kraftwerk. The Orb have maintained their signature science fiction aesthetic despite numerous personnel changes, including the departure of Cauty and members Kris Weston, Andy Falconer, Simon Phillips, Nick Burton, and Andy Hughes. Paterson has been the only permanent member, continuing to work as the Orb with Swiss-German producer Thomas Fehlmann, and later, with Martin "Youth" Glover, bassist of Killing Joke. Paterson's unauthorised use of other artists' works has led to multiple disputes, most notably with Rickie Lee Jones.

During their live shows in the 1990s, the Orb performed using digital audio tape machines optimised for live mixing and sampling before switching to laptops and other digital media. Featuring colourful light shows and psychedelic imagery, their performances often incited comparisons to Pink Floyd, whose guitarist, David Gilmour, later collaborated with them on the album Metallic Spheres in 2010.

Their eighteenth studio album, Buddhist Hipsters, was released on 10 October 2025 by Cooking Vinyl.

Alex Paterson began his music career in the early 1980s as a roadie for the post-punk rock band Killing Joke, for whom his childhood friend Martin "Youth" Glover played bass. Having left Killing Joke's employ, in 1986 Paterson became an A&R man. Paterson and Youth shared a flat in Battersea and Jimmy Cauty, Youth's former bandmate from Brilliant, was a regular visitor. Paterson and Cauty began DJing and producing music together under the name the Orb. Their first release was a 1988 acid house anthem track, "Tripping on Sunshine", released on Youth's compilation album Eternity Project One. The following year, the Orb released the Kiss EP, a four-track EP based on samples from New York City's KISS FM. It was released on Paterson and Glover's new record label WAU! Mr. Modo Records, which they created out of a desire to maintain financial independence from larger record labels. After spending a weekend of making what Paterson described as "really shit drum sounds", the duo decided to abandon beat-heavy music and instead work on music for after-hours listening by removing the percussion tracks. Paterson and Cauty began DJing in London and landed a deal for the Orb to play the chill out room at London nightclub Heaven. Resident DJ Paul Oakenfold brought in the duo as ambient DJs for his "The Land of Oz" event at Heaven. Though the Orb's Monday night performances had only several hardcore followers initially, their chill-out room act grew popular over the course of their six-month stay to the point that the room was often packed with around 100 people. The Orb's performances became most popular among weary DJs and clubbers seeking solace from the loud, rhythmic music of the dancefloor. The Orb built up melodies using multitrack recordings linked to multiple record decks and a mixer. The group incorporated many CDs, cassettes, and BBC sound effects into the act, often accompanied with pieces of popular dance tracks such as "Sueño Latino". Though the group used a variety of samples, they avoided heavy rhythm and drums so that the intended ambient atmosphere was not disrupted. Most often, the group played dub and other chill-out music, which it described as ambient house for the E generation.

Throughout 1989 the Orb, along with Youth, developed a music production style that incorporated ambient music with a diverse array of samples and recordings. The British music press later labelled the music ambient house. The culmination of the group's musical work came toward the end of the same year when they recorded a session for John Peel on BBC Radio 1. The track, then known as "Loving You", was largely improvisational and featured a wealth of sound effects and samples from science fiction radio plays, nature sounds, and Minnie Riperton's "Lovin' You". For its release as a single on the record label Big Life, the Orb changed the title to "A Huge Ever Growing Pulsating Brain That Rules from the Centre of the Ultraworld". Upon the single's release, Riperton's management forced Big Life to remove the unlicensed Riperton sample, ensuring that only the initial first-week release of the single contained the original vocals of Minnie Riperton; subsequent pressings used vocals from a sound-alike. Despite its running time of 19 minutes, the sample-laden single reached No. 78 on the UK singles chart. Soon thereafter, the Orb were commissioned by Dave Stewart to remix his top-20 single "Lily Was Here". The group obliged and were soon offered several more remix jobs from artists including Erasure and System 7.

In 1990, Paterson and Cauty held several recording sessions at Cauty's studio, Trancentral. When offered an album deal by Big Life, the Orb found themselves at a crossroads: Cauty preferred that the Orb release their music through his KLF Communications label, whereas Paterson wanted to ensure that the group did not become a side-project of Cauty and Bill Drummond's KLF. Because of these issues, Cauty and Paterson split in April 1990, with Paterson keeping the name the Orb. As a result of the break-up, Cauty removed Paterson's contributions from the in-progress recordings and released the album as Space on KLF Communications. Also out of these sessions came the KLF album Chill Out, on which Reynolds (1999) and Prendergast (2003) report Paterson appeared in an uncredited role. In a 2011 interview with Magnetic Magazine, Alex Paterson corroborated his involvement and contribution to the Chill Out album and said he had in fact been "ripped off" by the KLF and notably Jimmy Cauty, stating:

KLF put the Chill Out album out, which was basically a bunch of my DJ sessions at Trancentral which I never got credited for. That was one of the major reasons why Jimi and I split up. It was becoming apparent to me that everything he said he had given me, he never gave me. That shaped quite a lot of things in my head. Never to be ripped off again, I suppose. Don't worry, I got ripped off again. But as Jimi said to me, you're never really famous until you've been ripped off.