A rave (from the verb: to rave) is a dance party at a warehouse, club, or other public or private venue, typically featuring performances by DJs playing electronic dance music. The style is most associated with the early 1990s dance music scene when DJs played at illegal events in musical styles dominated by electronic dance music from a wide range of sub-genres, including drum and bass, dubstep, trap, break, happy hardcore, trance, techno, hardcore, house, and alternative dance. Occasionally live musicians have been known to perform at raves, in addition to other types of performance artists such as go-go dancers and fire dancers. The music is amplified with a large, powerful sound reinforcement system, typically with large subwoofers to produce a deep bass sound. The music is often accompanied by laser light shows, projected coloured images, visual effects and fog machines.

Fuelled by the emerging dance scene, and spearheaded by acid house music and underground bands such as The Prodigy, many of the "acid house" parties were held in squats during the late 1980s. Well known locations such as the "Dole House" (Peckham), the abandoned bus station and the squatted children's home in Camberwell known as Groove Park had crowds of over a thousand. Full Moon parties were organised at Groove Park by Pete Marland (who went on to start the dance scene in Western Ireland in the early 1990s) and multiple events went on for over a year as an Art Collective sanctioned by locals. The Times' first colour supplement carried an article about the dance scene at Groove Park, though some of the organisers did not want to be photographed. While some raves may be small parties held at nightclubs or private homes, some others have grown to immense size, such as the large festivals and events featuring multiple DJs and dance areas (e.g., the Castlemorton Common Festival in 1992).

Some electronic dance music festivals have features of raves, but on a larger, often commercial scale. Raves may last for a long time, with some events continuing for twenty-four hours, and lasting all through the night. Law enforcement raids and anti-rave laws have presented a challenge to the rave scene in many countries. This is due to the association of rave culture with illegal drugs such as MDMA (often referred to as a "club drug" or "party drug" along with MDA), amphetamine, LSD, GHB, ketamine, methamphetamine, cocaine, and cannabis. In addition to drugs, raves often make use of non-authorized, secret venues, such as squat parties at unoccupied homes, unused warehouses, or aircraft hangars. These concerns are often attributed to a type of moral panic surrounding rave culture.

In the late 1950s in London, England, the term "rave" was used to describe the "wild bohemian parties" of the Soho beatnik set. Jazz musician Mick Mulligan, known for indulging in such excesses, had the nickname "king of the ravers". In 1958, Buddy Holly recorded the hit "Rave On", citing the madness and frenzy of a feeling and the desire for it never to end. The word "rave" was later used in the burgeoning mod youth culture of the early 1960s as the way to describe any wild party in general. People who were gregarious party animals were described as "ravers". Pop musicians such as Steve Marriott of Small Faces and Keith Moon of the Who were self-described "ravers". In 1965, the Grateful Dead served as the backing band for the San Francisco Acid Tests, which were LSD drug parties organized by Ken Kesey. Subsequently, visual artist Andy Warhol later organized the Exploding Plastic Inevitable in New York, a multimedia event backed with performances by the Velvet Underground and Nico, the event was characterized by flashing lights, loud music, dancing and heavy drug use. During the psychedelic era, happenings became a common fixture of the counterculture. This later culminated in the massive social phenomenon known as the Summer of Love. The phrase "Summer of Love" was used once again during the advent of rave culture in the 1980s, referring to the "Second Summer of Love".

Presaging the word's subsequent 1980s association with electronic music, the word "rave" was a common term used regarding the music of mid-1960s garage rock and psychedelia bands (most notably the Yardbirds, who released an album in the United States called Having a Rave Up). Along with being an alternative term for partying at such garage events in general, the "rave-up" referred to a specific crescendo moment near the end of a song where the music was played faster, more heavily and with intense soloing or elements of controlled feedback. It was later part of the title of an electronic music performance event held on 28 January 1967 at London's Roundhouse titled the "Million Volt Light and Sound Rave". The event featured the only known public airing of an experimental sound collage created for the occasion by Paul McCartney of the Beatles – the legendary "Carnival of Light" recording.

With the rapid change of British pop culture from the mod era of 1963–1966 to the hippie era of 1967 and beyond, the term fell out of popular usage. The Northern soul movement is cited by many as being a significant step towards the creation of contemporary club culture and of the superstar DJ culture of the 2000s. As in contemporary club culture, Northern soul DJs built up a following based on satisfying the crowd's desires for music that they could not hear anywhere else. Many argue that Northern soul was instrumental in creating a network of clubs, DJs, record collectors and dealers in the UK, and was the first music scene to provide the British charts with records that sold entirely on the strength of club play.

A technique employed by northern soul DJs in common with their later counterparts was the sequencing of records to create euphoric highs and lows for the crowd; DJ Laurence 'Larry' Proxton was known for using this method. DJ personalities and their followers involved in the original Northern soul movement went on to become important figures in the house and dance music scenes. During the 1970s and early 1980s until its resurrection, the term was not in vogue, one notable exception being in the lyrics of the song "Drive-In Saturday" by David Bowie (from his 1973 album Aladdin Sane) which includes the line, "It's a crash course for the ravers." Its use during that era would have been perceived as a quaint or ironic use of bygone slang: part of the dated 1960s lexicon along with words such as "groovy".

The perception of the word "rave" changed again in the late 1980s when the term was revived and adopted by a new youth culture, possibly inspired by the use of the term in Jamaica.