Leprous is a Norwegian progressive metal band formed in 2001 in Notodden, Norway. The band gained prominence as the backing band for former Emperor frontman Ihsahn's live shows. Ihsahn has, in turn, contributed to several Leprous albums as a vocalist (on "Thorn" from Bilateral and "Contaminate Me" from Coal) and as a co-producer for Coal.

Although their music is often categorized as progressive rock or progressive metal, Einar Solberg, who is the main composer of the band, has referred that he's been so much inspired by Radiohead, Massive Attack, Arvo Part, Susanne Sundfør, The Prodigy, as well as some progressive acts like Porcupine Tree and The Dillinger Escape Plan.

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