Atmosphæra Incognita (Burton, Michigan: Subterranean Press, 2019) [novella: first appeared in Starship Century (anth 2013) edited by Gregory Benford and James Benford: hb/Patrick Arrasmith]
The Big U (New York: Vintage Books, 1984) [pb/uncredited]
Cobweb (London: Arrow Books, 2006) with George Frederick Jewsbury, as by Neal Stephenson and J Frederick George [vt of the above, differently credited: pb/uncredited]
The Cobweb (New York: Bantam Books, 1996) with George Frederick Jewsbury, writing together as Stephen Bury [pb/uncredited]
The Confusion (New York: William Morrow, 2004) [The Baroque Cycle: hb/Richard I Aquan]
Cryptonomicon (New York: Avon Books, 1999) [hb/Amy Halperin]
The Diamond Age (New York: Bantam Books, 1995) [a subtitle, Or, A Young Lady's Illustrated Primer, appears only on the cover and title-page verso: hb/Bruce Jensen]
Fall or, Dodge in Hell (New York: HarperCollins/William Morrow, 2019) [hb/Philippe Henri]
Interface (New York: Bantam Books, 1994) with George Frederick Jewsbury, writing together as Stephen Bury [pb/Bruce Jensen]
Interface (London: Arrow Books, 2002) with George Frederick Jewsbury, as by Neal Stephenson and J Frederick George [differently credited reissue of the above: pb/Cyberlab]