Depeche Mode (pronounced /dəˌpɛʃˈmoʊd/) are an electronic music group formed in 1980, in Basildon, Essex, England. The group's original line-up was Dave Gahan (lead vocals), Martin Gore (keyboards, guitar, vocals, chief songwriter after 1981), Andrew Fletcher (keyboards) and Vince Clarke (keyboards, chief songwriter 1980–81). Vince Clarke left the band after the release of their 1981 debut album, and was replaced by Alan Wilder (lead keyboards) who was a band member from 1982 to 1995. Following Wilder's departure, Gahan, Gore, and Fletcher have continued as a trio.

Depeche Mode are one of the longest-lived, most successful and influential bands to have emerged from the New Romantic and New Wave era. They have had forty-five songs in the UK Singles Chart (giving them more charting singles without a #1 hit than any other artist), as well as one US and two UK #1 albums. According to their record company, Depeche Mode have sold over 72 million records worldwide.

Depeche Mode's origins can be traced back to 1977, when Vince Clarke and Andrew Fletcher formed a band called No Romance in China, with Clarke on vocals/guitar and Fletcher on bass. In 1979, Clarke played guitar in an "Ultravox rip-off band", The Plan, with school friends Robert Marlow (vocals) and Paul Langwith (drums). In 1978–79, Gore played in an acoustic duo, Norman and the Worms, with school friend Philip Burdett (who now sings on the folk circuit) on vocals and Gore on guitar. In 1979, Marlow, Gore, Clarke and friend Paul Redmond formed a band called The French Look, Marlow on vocals/keyboards, Gore on guitar, Clarke and Redmond on keyboards. In March 1980, Clarke, Gore and Fletcher formed a band called Composition of Sound, with Clarke on vocals/guitar, Gore on keyboards and Fletcher on bass. The French Look and Composition of Sound once played live together in June 1980 at St. Nicholas School Youth Club in Southend-on-sea, Essex.

Soon after the formation of Composition of Sound, Clarke and Fletcher switched to synthesizers, working odd jobs, including carpentry, to buy them, or borrowing them from friends. Dave Gahan joined the band in 1980 after Clarke heard him perform at a local scout-hut jam session, crooning to a rendition of David Bowie's "Heroes", and Depeche Mode were born. When explaining the choice for the new name (taken from a French fashion magazine, Dépêche mode) Martin Gore has said,It means hurried fashion or fashion dispatch. I like the sound of that.