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- Tagmar - Brazilian fantasy game
- Tales from the Floating Vagabond by Avalon Hill
- Talislanta by Bard Games
- Teenage Mutant Ninja Turtles and Other Strangeness by Palladium Books - based on the Teenage Mutant Ninja Turtles comic books.
- Teenagers from Outer Space - an anime based RPG
- Ten Thousand Worlds - a free "universal" system distributed under a Creative Commons license
- Terra Primate by Eden Studios, Inc.
- Terra the Gunslinger (Japanese) - western and steampunk, use playing cards instead of dice
- Testament (role-playing game) by Late Gaming - game set during the End Times
- Tibet: The Roleplaying Game by Vajra Enterprises - historical fantasy set in Tibet
- Timehunter by Red Axe
- Time Lord — Adventures through Time and Space - a Doctor Who RPG based on the 1963–89 run of the BBC television series
- Timelords by Blacksburg Tactical Research Center
- Timeship by Yaquinto
- Theatrix by Backstage Press (1993)
- The Everlasting (role-playing game) by Visionary Entertainment Studios Inc
- The Price of Freedom by West End Games - America loses the Cold War and is Occupied, but Resistance is in our blood
- The Horror Game by Davis Ray Sickmon, Jr
- The Squared Circle by Day Dreamer Interactive
- The Unexplained by Carnivore Games
- Tokyo NOVA (Japanese) - cyberpunk
- Toon - cartoon adventure inspired by the classic cartoon series from Warner Brothers and MGM by Steve Jackson Games
- Top Secret by TSR, Inc. - espionage adventure
- TORG by West End Games
- Total Eclipse RPG by Steve N. Jackson published by Shrapnel Games - Smart phone optimized role playing game.
- Trail of Cthulhu by Pelgrane Press
- Transhuman Space by Steve Jackson Games
- Trauma (French) by Chroniques d'Outre-Monde - contemporary police and counter-terrorism adventures
- Traveller by GDW, Marc Miller
- Trevas - Brazilian game about other worlds
- Tribe 8 by Dream Pod 9
- Tribes by Steve Jackson Games
- Thrilling Tales : Pulp Amazing Stories
- Trinity by White Wolf Publishing
- Trystell by Tab Creations
- Tunnels and Trolls by Flying Buffalo
- TWERPS by Lou Zocchi
- Twilight 2000 by GDW (1984)
Read more about this topic: List Of Role-playing Games By Name