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- Tactics of Mistake by Gordon R. Dickson
- A Tale of the Ragged Mountains by Edgar Allan Poe
- Terror by Satellite by Hugh Walters
- Thebes of the Hundred Gates by Robert Silverberg
- There Are Doors by Gene Wolfe
- They Shall Have Stars by James Blish
- This Immortal by Roger Zelazny
- This Perfect Day by Ira Levin
- The Three Stigmata of Palmer Eldritch by Philip K. Dick
- Through the Heart by Richard Grant
- Tik-Tok by John Sladek
- Timeline by Michael Crichton
- Timelike Infinity by Stephen Baxter
- Time Enough for Love by Robert A. Heinlein
- The Time Machine by H. G. Wells
- The Time Traders by Andre Norton
- The Third Craft by James T. Harris
- Titan by John Varley
- Titan by Stephen Baxter
- To Challenge Chaos by Brian Stableford
- To Die in Italbar by Roger Zelazny
- To Live Forever (aka Clarges) by Jack Vance
- To the Resurrection Station by Eleanor Arnason
- To Venus in Five Seconds by Fred T. Jane
- To Your Scattered Bodies Go by Philip José Farmer
- Tower of Glass by Robert Silverberg
- A Transatlantic Tunnel, Hurrah! by Harry Harrison
- Transmigration by J. T. McIntosh
- Trapped by James Alan Gardner
- Trapped in Space by Jack Williamson
- Treason by Orson Scott Card
- Trouble on Triton by Samuel R. Delany
- Trouble with Lichen by John Wyndham
- The Truth Machine by James L. Halperin
Read more about this topic: List Of Science Fiction Novels