| Torrential TributeLabyrinth of Nightmare · 025 | Labyrinth of Nightmare | 025 | Ultra Rare | €0.08 |
| Total Defense ShogunCollectible Tins 2004 · 001 | Collectible Tins 2004 | 001 | Secret Rare | $0.25 |
| Totem BirdLord of the Tachyon Galaxy · 086 | Lord of the Tachyon Galaxy | 086 | Secret Rare | €0.24 |
| Totem DragonCrimson Crisis · 085 | Crimson Crisis | 085 | Super Rare | $0.55 |
| Totem FiveThe Dark Illusion · 039 | The Dark Illusion | 039 | Common | €0.05 |
| Totem PoleMaze of Millennia · 021 | Maze of Millennia | 021 | Rare | €0.09 |
| Tour Bus From the UnderworldOrder of Chaos · 086 | Order of Chaos | 086 | Secret Rare | €0.47 |
| Tour Bus To Forbidden RealmsJudgment of the Light · 085 | Judgment of the Light | 085 | Rare | €0.11 |
| Tour Guide From the UnderworldExtreme Victory · 084 | Extreme Victory | 084 | Secret Rare | €0.14 |
| Tour of DoomLight of Destruction · 068 | Light of Destruction | 068 | Common | €0.18 |
| Tower of BabelInvasion of Chaos · 050 | Invasion of Chaos | 050 | Common | €0.05 |
| Toxic BoxfishAlliance Insight · 085 | Alliance Insight | 085 | Super Rare | €0.18 |
| Toy BoxBattles of Legend: Terminal Revenge · 023 | Battles of Legend: Terminal Revenge | 023 | Ultra Rare | €0.44 |
| Toy KnightSecrets of Eternity · 093 | Secrets of Eternity | 093 | Common | $0.09 |
| Toy MagicianThe Duelist Genesis · 099 | The Duelist Genesis | 099 | Secret Rare | €0.34 |
| Toy ParadeBrothers of Legend · 037 | Brothers of Legend | 037 | Secret Rare | €0.15 |
| Toy SoldierBattles of Legend: Terminal Revenge · 021 | Battles of Legend: Terminal Revenge | 021 | Ultra Rare | €0.26 |
| Toy TankBattles of Legend: Terminal Revenge · 022 | Battles of Legend: Terminal Revenge | 022 | Ultra Rare | €0.18 |
| Toy VendorThe New Challengers · 060 | The New Challengers | 060 | Common | €0.08 |
| TrackblackGhosts From the Past: The 2nd Haunting · 028 | Ghosts From the Past: The 2nd Haunting | 028 | Ultra Rare | $0.16 |
| Trade-InRise of the Dragon Lords Structure Deck · 019 | Rise of the Dragon Lords Structure Deck | 019 | Common | €0.05 |
| TradetoadExtreme Victory · 033 | Extreme Victory | 033 | Rare | €0.42 |
| Trading PlacesExtreme Force · 065 | Extreme Force | 065 | Short Print | €0.05 |
| Traffic GhostStructure Deck: Powercode Link · 041 | Structure Deck: Powercode Link | 041 | Common | €0.12 |
| TragedyRise of Destiny · 049 | Rise of Destiny | 049 | Super Rare | €0.07 |
| Tragic Twin Twined JewelsDoom of Dimensions · 071 | Doom of Dimensions | 071 | Common | $0.06 |
| TragoediaShonen Jump Vol. 7, Issue 9 promotional card · 033 | Shonen Jump Vol. 7, Issue 9 promotional card | 033 | Ultra Rare | $0.12 |
| Train ConnectionDragons of Legend · 039 | Dragons of Legend | 039 | Super Rare | €0.13 |
| Training Fur Hire, Fur All Your Training NeedsDark Saviors · 026 | Dark Saviors | 026 | Secret Rare | €0.10 |
| TrakodonMcDonald's Promotional Cards 2 · 017 | McDonald's Promotional Cards 2 | 017 | Common | €2.66 |
| Trance ArchfiendOrder of Chaos · 035 | Order of Chaos | 035 | Short Print | €0.30 |
| TrancefamiliarFlames of Destruction · 029 | Flames of Destruction | 029 | Common | €0.05 |
| Trance the Magic SwordsmanReturn of the Duelist · 001 | Return of the Duelist | 001 | Common | €0.08 |
| Transaction RollbackMaze of Millennia · 038 | Maze of Millennia | 038 | Ultra Rare | $0.19 |
| Transcendent WingsCybernetic Revolution · 045 | Cybernetic Revolution | 045 | Rare | €0.17 |
| Transcendosaurus DrillygnathusWild Survivors · 005 | Wild Survivors | 005 | Rare | €0.12 |
| Transcendosaurus ExaraptorAge of Overlord · 044 | Age of Overlord | 044 | Common | €0.07 |
| Transcendosaurus GigantozowlerWild Survivors · 003 | Wild Survivors | 003 | Super Rare | $0.33 |
| Transcendosaurus GlaciasaurusWild Survivors · 004 | Wild Survivors | 004 | Rare | €0.10 |
| Transcendosaurus MeteorusWild Survivors · 002 | Wild Survivors | 002 | Super Rare | €0.16 |
| TranscicadaIgnition Assault · 030 | Ignition Assault | 030 | Common | €0.05 |
| Transcode TalkerStarter Deck: Codebreaker · 041 | Starter Deck: Codebreaker | 041 | Ultra Rare | $0.53 |
| Transforming SphereShonen Jump May 2010 subscription bonus · 042 | Shonen Jump May 2010 subscription bonus | 042 | Ultra Rare | $0.13 |
| Transmigration BreakPhantom Darkness · 079 | Phantom Darkness | 079 | Common | $0.07 |
| Transmission GearCode of the Duelist · 080 | Code of the Duelist | 080 | Short Print | $0.16 |
| TransmodifyJudgment of the Light · 067 | Judgment of the Light | 067 | Secret Rare | €0.12 |
| Transonic BirdBurst of Destiny · 037 | Burst of Destiny | 037 | Common | €0.02 |
| Trap DustshootPharaonic Guardian · 049 | Pharaonic Guardian | 049 | Common | $1.05 |
| Trap EaterCrimson Crisis · 005 | Crimson Crisis | 005 | Common | €0.44 |
| Trap GathererThe Infinite Forbidden · 065 | The Infinite Forbidden | 065 | Common | €0.04 |