Novels

• The Embedding. London: Gollancz, 1973. ISBN 0-575-01687-6
• The Jonah Kit. London: Gollancz, 1975. ISBN 0-575-01938-7
• Orgasmachine. Paris: Editions Champ Libre, 1976.
• The Martian Inca. London: Gollancz, 1977. ISBN 0-575-02218-3
• Alien Embassy. London: Gollancz, 1977. ISBN 0-575-02336-8
• Miracle Visitors. London: Gollancz, 1978. ISBN 0-575-02474-7
• God's World. London, Gollancz, 1979. ISBN 0-575-02683-9
• The Gardens of Delight. London: Gollancz, 1980. ISBN 0-575-02819-X
• Deathhunter. London: Gollancz, 1981. ISBN 0-575-03023-2
• Under Heaven's Bridge, with Michael Bishop. London: Gollancz, 1982. ISBN 0-575-02927-7
• Chekov's Journey. London: Gollancz, 1983. ISBN 0-575-03213-8
• Converts. London: Granada, 1984 (paper). ISBN 0-586-05895-8
• The Books of the Black Current:
• The Book of the River. London: Gollancz, 1984. ISBN 0-575-03396-7
• The Book of the Stars. London: Gollancz, 1984. ISBN 0-575-03508-0
• The Book of Being. London: Gollancz, 1985. ISBN 0-575-03596-X
• Yaleen, omnibus edition. Dallas, TX: Benbella Books, 2004 ISBN 1-932100-24-5
• Queenmagic, Kingmagic. London: Gollancz, 1986. ISBN 0-575-03883-7
• The Power. London: Headline, 1987. ISBN 0-7472-0031-9
• The Whores of Babylon. London: Paladin, 1988 (paper). ISBN 0-586-08773-7
• Meat. London: Headline, 1988. ISBN 0-7472-3130-3
• The Fire Worm. London: Gollancz, 1988. ISBN 0-575-04300-8
• The Flies of Memory. London: Gollancz, 1990. ISBN 0-575-04873-5
• The Books of Mana:
• Lucky's Harvest. London: Gollancz, 1993. ISBN 0-575-05423-9
• The Fallen Moon. London: Gollancz, 1994. ISBN 0-575-05424-7
• Hard Questions. London: Gollancz, 1996. ISBN 0-575-06189-8
• Oracle. London: Gollancz, 1997. ISBN 0-575-06487-0
• Mockymen. Urbana, IL: Golden Gryphon Press, 2003. ISBN 1-930846-21-5

Warhammer 40,000

• The Inquisition War trilogy:
• Inquisitor (vt 2002 Draco). Brighton: GW Books, 1990 (paper). ISBN 1-872372-29-5
• Harlequin. London: Boxtree, 1994. ISBN 0-7522-0965-5
• Chaos Child. London: Boxtree, 1995. ISBN 0-7522-0621-4
• Space Marine. London: Boxtree, 1993 (paper). ISBN 1-85283-840-X

Collections

• The Very Slow Time Machine. London: Gollancz, 1979. ISBN 0-575-02582-4
• Sunstroke and Other Stories. London: Gollancz, 1982. ISBN 0-575-03138-7
• Slow Birds and Other Stories. London: Gollancz, 1985. ISBN 0-575-03675-3
• The Book of Ian Watson. Willimantic, CO: Mark V. Zeising, 1985. ISBN 0-9612970-3-4
• Evil Water and Other Stories. London: Gollancz, 1987. ISBN 0-575-03953-1
• Salvage Rites and Other Stories. London: Gollancz, 1989. ISBN 0-575-04447-0
• Stalin's Teardrops. London: Gollancz, 1991. ISBN 0-575-04942-1
• The Coming of Vertumnus. London: Gollancz, 1994. ISBN 0-575-05766-1
• The Great Escape. Urbana, IL: Golden Gryphon Press, 2002. ISBN 1-930846-09-6
• The Butterflies of Memory. Harrogate: PS Publishing, 2006. ISBN 1-904619-49-5