Keys of the Kingdom is the fourteenth album by the rock band the Moody Blues, released in 1991. Although some of the tracks recall the songwriting on Sur la Mer, the failure of Keys of the Kingdom to produce any major hit singles would mark the beginning of the Moodies' decline in popularity with mainstream audiences after their success in the MTV video generation.

The Moody Blues were an English rock band formed in Birmingham in May 1964. The band initially consisted of drummer Graeme Edge, guitarist/vocalist Denny Laine, keyboardist/vocalist Mike Pinder, multi-instrumentalist/vocalist Ray Thomas, and bassist/vocalist Clint Warwick. Originally part of the British beat and R&B scene of the early–mid 1960s, the band came to prominence with the UK No. 1 and US Top 10 single "Go Now" in late 1964/early 1965. Laine and Warwick left the band by the end of 1966, being replaced by guitarist/vocalist Justin Hayward and bassist/vocalist John Lodge. They embraced the psychedelic rock movement of the late 1960s, with their second album, 1967's Days of Future Passed, being a fusion of rock with classical music that established the band as pioneers in the development of art rock and progressive rock. It has been described as a "landmark" and "one of the first successful concept albums".