Kingdom of Madness is the debut studio album by the English rock band Magnum. It was recorded in 1976, and was released in 1978 by Jet Records. Kingdom of Madness was awarded a 4 star review in Sounds, with writer Geoff Barton suggesting the band were capable of making a strong claim for a slice of the market occupied by the likes of Styx, Kansas and Yes.

Magnum were an English progressive rock, melodic hard rock and AOR band. They were formed in Birmingham in 1972 by Tony Clarkin and Bob Catley (vocals) in order to appear as the resident band at the Rum Runner nightclub in the city. Magnum have undergone several changes in personnel over the years; however, the core of Catley and Clarkin remained until Clarkin's death in 2024.