legendary beings list : I

• Iannic-ann-ôd (Breton) - Ghost of a drowned person
• Iara (Brazilian) - Female water spirit
• Ibong Adarna (Philippine) - Bird that changes color each time it finishes a song
• Ichimoku-nyūdō (Japanese) - One-eyed kappa from Sado Island
• Ichiren-Bozu (Japanese) - Animated prayer beads
• Ichneumon (Medieval Bestiaries) - Dragon-killing animal
• Ichthyocentaur (Greek) - Human-fish hybrid
• Iele (Romanian) - Female nature spirits
• Ifrit (Arabian) - Fire genie
• Ijiraq (Inuit) - Spirit that kidnaps children
• Ikiryō (Japanese) - can be considered a 'living ghost', as it is a person's spirit outside their body
• Ikuchi (Japanese) - Sea-serpent that travels over boats in an arc while dripping oil
• Iku-Turso (Finnish) - Sea monster
• Il-Belliegħa (Maltese) - Malevolent well spirit
• Imp (Medieval) - Diminutive, demonic servant
• Impundulu (Southern Africa) - Avian, vampiric lightning spirit
• Imugi (Korean) - Flightless, dragon-like creatures (sometimes thought of as proto-dragons)
• Inapertwa (Aboriginal) - Simple organisms, used by creator-gods to make everything else
• Incubus (Medieval folklore) - Male night-demon and rapist
• Indrik (Russian) - One-horned horse-bull hybrid
• Indus Worm (Medieval Bestiaries) - Giant, white, carnivorous worm
• Inkanyamba (Zulu) - Horse-headed serpent
• Inugami (Japanese) - Dog spirit
• Ipotane (Greek) - Horse-human hybrid, two-legged (as opposed to the four-legged centaur)
• Ippon-datara (Japanese) - One-legged mountain spirit
• Iratxoak (Basque) - Diminutive, demonic servants
• Irin (Jewish) - Fallen angels
• Ishigaq (Inuit) - Little people
• Island Satyr (Medieval Bestiaries) - Savage human-goat hybrid from a remote island chain
• Isonade (Japanese) - Shark-like sea monster
• Ittan-momen (Japanese) - Ghostly aerial phenomenon that attacks people
• Iwana-bōzu (Japanese) - Char which appeared as a Buddhist monk