The Steel Tsar is a sci-fi/alternate history novel by Michael Moorcock, first published in 1981 by Granada. Being a sequel to Warlord of the Air (1971) and The Land Leviathan (1974), it is the final part of Moorcock's A Nomad of the Time Streams trilogy regarding the adventures of Captain Oswald Bastable and which has been seen as an early example of steampunk fiction. The same cover image was used for the 1987 reissue of Judas Priest album Rocka Rolla and also the 1989 video game Ballistix.