| Royal Rhino with Deceitful DicePhantom Nightmare · 036 | Phantom Nightmare | 036 | Common | €0.07 |
| Royal StraightBattles of Legend: Crystal Revenge · 002 | Battles of Legend: Crystal Revenge | 002 | Ultra Rare | €0.13 |
| Royal Straight SlasherBattles of Legend: Crystal Revenge · 001 | Battles of Legend: Crystal Revenge | 001 | Secret Rare | €0.25 |
| Royal SurrenderThe Lost Millennium · 059 | The Lost Millennium | 059 | Rare | €0.18 |
| Royal Swamp EelCrimson Crisis · 086 | Crimson Crisis | 086 | Super Rare | €1.61 |
| Royal TributePharaonic Guardian · 091 | Pharaonic Guardian | 091 | Common | $1.82 |
| Royal Writ of TaxationPower of the Duelist · 054 | Power of the Duelist | 054 | Common | $0.11 |
| R - Righteous JusticeEnemy of Justice · 040 | Enemy of Justice | 040 | Common | €0.08 |
| Rubic, Malebranche of the Burning AbyssThe New Challengers · 082 | The New Challengers | 082 | Ultra Rare | €0.72 |
| Rubysapphirus, the Adamant JewelRage of the Abyss · 044 | Rage of the Abyss | 044 | Common | €0.02 |
| Rucia of the White ForestThe Infinite Forbidden · 016 | The Infinite Forbidden | 016 | Common | €0.07 |
| Ruddy Rose DragonLightning Overdrive · 035 | Lightning Overdrive | 035 | Secret Rare | €0.22 |
| Ruddy Rose WitchLightning Overdrive · 010 | Lightning Overdrive | 010 | Super Rare | €0.02 |
| Rude KaiserStarter Deck: Kaiba · 027 | Starter Deck: Kaiba | 027 | Common | €0.02 |
| Ruffian RailcarThe New Challengers · 090 | The New Challengers | 090 | Common | €0.08 |
| Ruin, Angel of OblivionCybernetic Horizon · 027 | Cybernetic Horizon | 027 | Common | €0.08 |
| Ruin, Queen of OblivionShadow of Infinity · 034 | Shadow of Infinity | 034 | Super Rare | $0.39 |
| Ruins of the Divine Dragon LordsRise of the True Dragons Structure Deck · 024 | Rise of the True Dragons Structure Deck | 024 | Super Rare | €0.08 |
| Ruin, Supreme Queen of OblivionCybernetic Horizon · 029 | Cybernetic Horizon | 029 | Rare | €0.20 |
| Ruler of the End of the WorldMagnificent Monsters · 121 | Magnificent Monsters | 121 | Secret Rare | $1.39 |
| Runaway KarakuriExtreme Victory · 058 | Extreme Victory | 058 | Common | €0.03 |
| Rune-Eyes Pendulum DragonSecrets of Eternity · 045 | Secrets of Eternity | 045 | Ultra Rare | €0.18 |
| Runick AllureTactical Masters · 028 | Tactical Masters | 028 | Rare | €0.08 |
| Runick DestructionTactical Masters · 031 | Tactical Masters | 031 | Super Rare | $0.37 |
| Runick DispellingTactical Masters · 032 | Tactical Masters | 032 | Rare | €0.10 |
| Runick Flashing FireTactical Masters · 030 | Tactical Masters | 030 | Super Rare | $0.34 |
| Runick FountainTactical Masters · 027 | Tactical Masters | 027 | Ultra Rare | €0.47 |
| Runick Freezing CursesTactical Masters · 033 | Tactical Masters | 033 | Super Rare | $0.35 |
| Runick Golden DropletTactical Masters · 035 | Tactical Masters | 035 | Super Rare | €0.14 |
| Runick SlumberTactical Masters · 034 | Tactical Masters | 034 | Rare | €0.16 |
| Runick Smiting StormTactical Masters · 036 | Tactical Masters | 036 | Rare | €0.05 |
| Runick TipTactical Masters · 029 | Tactical Masters | 029 | Ultra Rare | $2.74 |
| Rush RecklesslyMagic Ruler · 043 | Magic Ruler | 043 | Rare | $0.05 |
| Rush WarriorSynchron Extreme Structure Deck · 002 | Synchron Extreme Structure Deck | 002 | Common | €0.07 |
| Rustin MammothBlazing Dominion · 087 | Blazing Dominion | 087 | Common | €0.05 |
| Ruthless DenialDuelist Pack: Zane Truesdale · 024 | Duelist Pack: Zane Truesdale | 024 | Super Rare | €0.21 |
| Ruthless MeansSpeed Duel GX: Duelists of Shadows · 01 | Speed Duel GX: Duelists of Shadows | 01 | Common | $0.08 |
| Ryko, Lightsworn HunterLight of Destruction · 022 | Light of Destruction | 022 | Super Rare | €0.22 |
| Ryko, Twilightsworn FighterCode of the Duelist · 027 | Code of the Duelist | 027 | Rare | €0.08 |
| Ryu-Ge EndAlliance Insight · 076 | Alliance Insight | 076 | Common | $0.08 |
| Ryu-Ge Realm - Dino DomainsCrossover Breakers · 037 | Crossover Breakers | 037 | Rare | €0.10 |
| Ryu-Ge Realm - Sea SpiresCrossover Breakers · 038 | Crossover Breakers | 038 | Rare | €0.09 |
| Ryu-Ge Realm - Wyrm WindsCrossover Breakers · 039 | Crossover Breakers | 039 | Rare | $0.11 |
| Ryu-Ge RisingCrossover Breakers · 035 | Crossover Breakers | 035 | Rare | $0.12 |
| Ryu-Ge RivalryCrossover Breakers · 040 | Crossover Breakers | 040 | Rare | $0.09 |
| Ryu-Ge War ZoneCrossover Breakers · 036 | Crossover Breakers | 036 | Super Rare | $0.14 |
| Ryu-KishinStarter Deck: Kaiba · 003 | Starter Deck: Kaiba | 003 | Common | €0.10 |
| Ryu-Kishin ClownLegacy of Darkness · 007 | Legacy of Darkness | 007 | Common | €0.05 |
| Ryu-Kishin PoweredStarter Deck: Kaiba · 024 | Starter Deck: Kaiba | 024 | Common | €0.07 |
| Ryu KokkiInvasion of Chaos · 090 | Invasion of Chaos | 090 | Common | €0.05 |