| Turtle BirdMcDonald's Promotional Cards · 014 | McDonald's Promotional Cards | 014 | Common | $1.93 |
| Turtle OathMagic Ruler · 066 | Magic Ruler | 066 | Common | €0.05 |
| Turtle RaccoonUnlisted Printings | Unlisted Printings | — | — | — |
| Turtle TigerLegend of Blue Eyes White Dragon · 023 | Legend of Blue Eyes White Dragon | 023 | Common | €0.02 |
| Turu-PurunTournament Pack: 2nd Season · 017 | Tournament Pack: 2nd Season | 017 | Common | $6.19 |
| Tutan MaskPharaonic Guardian · 041 | Pharaonic Guardian | 041 | Common | €0.06 |
| Twilight ClothCode of the Duelist · 073 | Code of the Duelist | 073 | Common | €0.03 |
| Twilight EraserCode of the Duelist · 072 | Code of the Duelist | 072 | Rare | €0.07 |
| Twilight Ninja Getsuga, the ShogunBreakers of Shadow · 017 | Breakers of Shadow | 017 | Rare | €0.07 |
| Twilight Ninja JogenBattles of Legend: Light's Revenge · 016 | Battles of Legend: Light's Revenge | 016 | Ultra Rare | €0.02 |
| Twilight Ninja KagenBattles of Legend: Light's Revenge · 017 | Battles of Legend: Light's Revenge | 017 | Ultra Rare | €0.04 |
| Twilight Ninja Nichirin, the ChuninBreakers of Shadow · 016 | Breakers of Shadow | 016 | Common | €0.05 |
| Twilight Ninja ShingetsuBreakers of Shadow · 015 | Breakers of Shadow | 015 | Common | €0.09 |
| Twilight Rose Black KnightDoom of Dimensions · 005 | Doom of Dimensions | 005 | Common | $0.16 |
| Twilight Rose KnightCrimson Crisis · 011 | Crimson Crisis | 011 | Super Rare | €0.15 |
| Twilight Specter RayrageChaos Origins · 025 | Chaos Origins | 025 | Common | €0.03 |
| Twilight Twin DragonsCode of the Duelist · 060 | Code of the Duelist | 060 | Common | €0.06 |
| Twin-Barrel DragonThe Duelist Genesis · 029 | The Duelist Genesis | 029 | Super Rare | €0.15 |
| Twinheaded BeastYu-Gi-Oh! Destiny Board Traveler promotional cards · 003 | Yu-Gi-Oh! Destiny Board Traveler promotional cards | 003 | Super Rare | $0.98 |
| Twin-Headed BehemothLegacy of Darkness · 063 | Legacy of Darkness | 063 | Super Rare | €0.07 |
| Twin-Headed Fire DragonPharaoh's Servant · 042 | Pharaoh's Servant | 042 | Common | €0.02 |
| Twin-Headed Thunder DragonMetal Raiders · 120 | Metal Raiders | 120 | Super Rare | €0.25 |
| Twin-Headed WolfLegacy of Darkness · 008 | Legacy of Darkness | 008 | Common | $0.13 |
| Twin Long Rods #1Unlisted Printings | Unlisted Printings | — | — | — |
| Twin Long Rods #2Magic Ruler · 057 | Magic Ruler | 057 | Common | €0.05 |
| Twin Photon LizardOrder of Chaos · 039 | Order of Chaos | 039 | Ultra Rare | €0.10 |
| Twin Pillars of IceBattles of Legend: Monster Mayhem · 032 | Battles of Legend: Monster Mayhem | 032 | New | €0.13 |
| Twin-Shield DefenderThe Duelist Genesis · 011 | The Duelist Genesis | 011 | Common | €0.10 |
| Twin-Sword MarauderCrimson Crisis · 006 | Crimson Crisis | 006 | Common | €0.06 |
| Twin Swords of Flashing Light - TryceDark Crisis · 037 | Dark Crisis | 037 | Common | €0.31 |
| Twin Triangle DragonCircuit Break · 046 | Circuit Break | 046 | Rare | €0.06 |
| Twin TwistersBreakers of Shadow · 067 | Breakers of Shadow | 067 | Super Rare | €0.11 |
| Twisted PersonalitySpeed Duel Starter Decks: Twisted Nightmares · 04 | Speed Duel Starter Decks: Twisted Nightmares | 04 | Common | €0.19 |
| TwisterStrike of Neos · 042 | Strike of Neos | 042 | Rare | €0.02 |
| Two-for-One Repair JobBattles of Legend: Monster Mayhem · 029 | Battles of Legend: Monster Mayhem | 029 | New | €0.06 |
| Two-for-One TeamSoul Fusion · 032 | Soul Fusion | 032 | Short Print | €0.02 |
| Two-Headed King RexTournament Pack: 2nd Season · 025 | Tournament Pack: 2nd Season | 025 | Common | €0.05 |
| Two-Man Cell BattleSoul of the Duelist · 045 | Soul of the Duelist | 045 | Common | €0.12 |
| Two-Mouth DarkrulerLegend of Blue Eyes White Dragon · 030 | Legend of Blue Eyes White Dragon | 030 | Common | €0.02 |
| Two-Pronged AttackLegend of Blue Eyes White Dragon · 061 | Legend of Blue Eyes White Dragon | 061 | Rare | €0.02 |
| Two Thousand NeedlesAncient Sanctuary · 027 | Ancient Sanctuary | 027 | Common | €0.10 |
| Two Toads with One StingDawn of Majesty · 097 | Dawn of Majesty | 097 | Common | €0.14 |
| TyhoneLegend of Blue Eyes White Dragon · 063 | Legend of Blue Eyes White Dragon | 063 | Common | €0.02 |
| Tyhone #2Magic Ruler · 017 | Magic Ruler | 017 | Common | €0.04 |
| Tyler the Great WarriorMake-A-Wish Foundation promotional card · 001 | Make-A-Wish Foundation promotional card | 001 | Ultra Rare | — |
| Type Zero Magic CrusherPharaoh's Servant · 074 | Pharaoh's Servant | 074 | Common | €0.05 |
| TyphoonBattle Pack 3: Monster League · 235 | Battle Pack 3: Monster League | 235 | Common | €0.50 |
| Tyranno InfinityCybernetic Revolution · 029 | Cybernetic Revolution | 029 | Common | €0.14 |
| Tyrant Burst DragonDragons of Legend 2 · 004 | Dragons of Legend 2 | 004 | Secret Rare | €0.07 |
| Tyrant Dino FusionDark Neostorm · 053 | Dark Neostorm | 053 | Common | €0.06 |