Diabolique is a Swedish gothic metal band, formed in 1995 after the dissolution of Liers in Wait. The group is heavily influenced by The Sisters of Mercy, Black Sabbath, and Fields of the Nephilim, and in sound are similar to the styles of Charon, Tiamat, Moonspell, and Type O Negative.

The band's current and former line-up has consisted of many musicians from progenital Gothenburg melodic death metal bands; Kristian Wåhlin, Johan Osterberg, and Alf Svensson were in Grotesque (a predecessor of At the Gates, who Alf would eventually join); and Daniel Svensson briefly played drums with the group before going on to major success with In Flames.