C¶
- Cactus Bouncer
- Cactus Fighter
- Caius the Shadow Monarch
- Call of Darkness
- Call of the Earthbound
- Call of the Grave
- Call of the Haunted
- Call of the Mummy
- Call of the Reaper
- Calming Magic
- Cannon Soldier
- Cannon Soldier MK-2
- Cannonball Spear Shellfish
- Canyon
- Card Blocker
- Card Destruction
- Card Ejector
- Card Guard
- Card Of Safe Return
- Card of Sanctity
- Card Rotator
- Card Shuffle
- Card Trader
- Card Trooper
- Cards of Consonance
- Carrierroid
- Castle Gate
- Castle of Dark Illusions
- Castle Walls
- Catapult Turtle
- Catnipped Kitty
- Catoblepas and the Witch of Fate
- Cat’s Ear Tribe
- Cave Dragon
- Ceasefire
- Celestia, Lightsworn Angel
- Celestial Transformation
- Cell Explosion Virus
- Celtic Guardian
- Cemetary Bomb
- Centrifugal Field
- Ceremonial Bell
- Cestus of Dagla
- Chain Burst
- Chain Destruction
- Chain Detonation
- Chain Disappearance
- Chain Energy
- Chain Healing
- Chain Material
- Chain Strike
- Chain Summoning
- Chain Thrasher
- Chainsaw Insect
- Chamberlain of the Six Samurai
- Change Of Heart
- Change of Hero - Reflector Ray
- Changing Destiny
- Chaos Burst
- Chaos Command Magician
- Chaos Emperor Dragon - Envoy of the End
- Chaos End
- Chaos-End Master
- Chaos Greed
- Chaos Necromancer
- Chaos Sorcerer
- Chaosrider Gustaph
- Charcoal Inpachi
- Charge of the Light Brigade
- Charm of Shabti
- Charubin the Fire Knight
- Checkmate
- Chimaera, the Master of Beasts
- Chimera the Flying Mythical Beast
- Chimeratech Fortress Dragon
- Chimeratech Overdragon
- Chiron the Mage
- Chopman the Desperate Outlaw
- Chorus of Sanctuary
- Chosen One
- Chrysalis Chicky
- Chrysalis Dolphin
- Chrysalis Larva
- Chrysalis Mole
- Chrysalis Pantail
- Chrysalis Pinny
- Chthonian Alliance
- Chthonian Blast
- Chthonian Emperor Dragon
- Chthonian Polymer
- Chthonian Soldier
- Chu-Ske the Mouse Fighter
- Cipher Soldier
- Claw Reacher
- Clay Charge
- Clear Vice Dragon
- Clear World
- Cloak and Dagger
- Clock Tower Prison
- Cloning
- Cloudian - Acid Cloud
- Cloudian - Altus
- Cloudian - Cirrostratus
- Cloudian - Eye of the Typhoon
- Cloudian - Ghost Fog
- Cloudian - Nimbusman
- Cloudian - Poison Cloud
- Cloudian - Sheep Cloud
- Cloudian - Smoke Ball
- Cloudian Squall
- Cloudian - Storm Dragon
- Cloudian - Turbulence
- Clown Zombie
- Coach Goblin
- Cobra Jar
- Cobraman Sakuzy
- Cockroach Knight
- Cocoon of Evolution
- Cocoon Party
- Cocoon Rebirth
- Cocoon Veil
- Codarus
- Code A Ancient Ruins
- Coffin Seller
- Cold Enchanter
- Cold Wave
- Collected Power
- Colossal Fighter
- Colossal Fighter/Assault Mode
- Colosseum - Cage of the Gladiator Beasts
- Combination Attack
- Combo Fighter
- Combo Master
- Command Knight
- Commander Covington
- Commander Gottoms, Swordmaster
- Commencement Dance
- Common Charity
- Common Soul
- Compulsory Evacuation Device
- Comrade Swordsman of Landstar
- Confusion Chaff
- Conscription
- Consecrated Light
- Contact
- Contact Out
- Continuous Destruction Punch
- Contract with Exodia
- Contract with the Abyss
- Contract with the Dark Master
- Convert Contact
- Convulsion of Nature
- Copy Plant
- Copycat
- Core Blast
- Core Blaster
- Core Compression
- Core Reinforcement
- Core Transport Unit
- Corroding Shark
- Corruption Cell “A”
- Cosmic Fortress Gol’gar
- Cosmic Horror Gangi’el
- Cosmo Queen
- Cost Down
- Counselor Lily
- Counter Cleaner
- Counter Counter
- Counter Gem
- Covering Fire
- Crab Turtle
- Cranium Fish
- Crass Clown
- Crawling Dragon
- Crawling Dragon #2
- Creature Seizure
- Creature Swap
- Creeping Doom Manta
- Crimson Fire
- Crimson Ninja
- Crimson Sentry
- Criosphinx
- Crop Circles
- Cross Counter
- Cross Porter
- Cross-Sword Beetle
- Crusader of Endymion
- Cry Havoc!
- Cryomancer of the Ice Barrier
- Crystal Abundance
- Crystal Beacon
- Crystal Beast Amber Mammoth
- Crystal Beast Amethyst Cat
- Crystal Beast Cobalt Eagle
- Crystal Beast Emerald Tortoise
- Crystal Beast Ruby Carbuncle
- Crystal Beast Sapphire Pegasus
- Crystal Beast Topaz Tiger
- Crystal Blessing
- Crystal Pair
- Crystal Promise
- Crystal Raigeki
- Crystal Release
- Crystal Seer
- Crystal Tree
- Cu Chulainn the Awakened
- Cunning of the Six Samurai
- Cup of Ace
- Cure Mermaid
- Curse of Aging
- Curse of Anubis
- Curse of Darkness
- Curse of Dragon
- Curse of Fiend
- Curse of Royal
- Curse of the Masked Beast
- Cursed Fig
- Cursed Seal of the Forbidden Spell
- Cyber Archfiend
- Cyber Barrier Dragon
- Cyber Blader
- Cyber Dinosaur
- Cyber Dragon
- Cyber Dragon Zwei
- Cyber Eltanin
- Cyber End Dragon
- Cyber Esper
- Cyber Falcon
- Cyber Gymnast
- Cyber Harpie Lady
- Cyber Jar
- Cyber Kirin
- Cyber Laser Dragon
- Cyber Ogre
- Cyber Ogre 2
- Cyber Ouroboros
- Cyber Phoenix
- Cyber Prima
- Cyber Raider
- Cyber Saurus
- Cyber Shadow Gardna
- Cyber Shark
- Cyber Soldier of Darkworld
- Cyber Summon Blaster
- Cyber-Tech Alligator
- Cyber Tutu
- Cyber Twin Dragon
- Cyber Valley
- Cyberdark Dragon
- Cyberdark Edge
- Cyberdark Horn
- Cyberdark Impact!
- Cyberdark Keel
- Cybernetic Cyclopean
- Cybernetic Hidden Technology
- Cybernetic Magician
- Cybernetic Zone
- Cyborg Doctor
- Cyclon Laser
- Cyclone Blade
- Cyclone Boomerang
- Cycroid