The Land Leviathan is a sci-fi/alternate history novel by Michael Moorcock, first published in 1974. Originally subtitled A New Scientific Romance, it has been seen as an early steampunk novel, dealing with an alternative British Imperial history dominated by airships and futuristic warfare. It is a sequel to Warlord of the Air (1971) and followed by The Steel Tsar (1981). This proto-steampunk trilogy is also published as the compilation volume A Nomad of the Time Streams.