"Original" is a song by English electronic duo Leftfield, released on 12" and CD on 13 March 1995 by Hard Hands/PolyGram as the third single from their debut album, Leftism (1995). It features singer Toni Halliday on vocals and gave the group their first appearance on Top of the Pops, reaching number 18 on the UK Singles Chart. Halliday wrote the lyrics with Neil Barnes and Paul Daley. The beginning of the song is used often on the UK version of Big Brother.

Leftfield are a British electronic music group formed in 1989, a duo of Neil Barnes and Paul Daley. The duo was influential in the evolution of electronic music in the 1990s, with Mixmag describing them as "the single most influential production team working in British dance music". As with many of their contemporaries, such as The Chemical Brothers and Fatboy Slim, Leftfield are notable for their use of guest vocalists in their works. Among them are Toni Halliday on "Original", Johnny Rotten on "Open Up", Djum Djum on "Afro-Left", Earl 16 and Cheshire Cat on "Release the Pressure", and Grian Chatten of Fontaines D.C. on "Full Way Round". The term progressive house was coined to define their style, a fusion of house with dub and reggae.