List of legendary creatures (H)
Hippocampus drawn from a fresco in Pompeii
- Habrok (Norse) – listed as the "best" hawk
- Hadhayosh (Persian) – gigantic land animal
- Hades (Greek) – Ruler of the Underworld
- Haetae (Korean) – dog-lion hybrid
- Hag (Many cultures worldwide) – wise old woman who is usually a malevolent spirit or a disguised goddess
- Haietlik (Nuu-chah-nulth) – water serpent
- Hai-uri (Khoikhoi) – male cannibalistic partially invisible monster
- Hakutaku (Japanese) – talking beast which handed down knowledge on harmful spirits
- Hākuturi (Māori) – nature guardian
- Half-elf (Norse) – human-elf hybrid
- Haltija (Finnish) – spirit that protects a specific place
- Hamadryad (Greek) – oak tree nymph
- Hamingja (Scandinavian) – personal protection spirit
- Hamsa (Buddhist, Hindu and Jainism) – mystic bird
- Hanau epe (Rapa Nui) – long-eared humanoid
- Hantu Air (Malay) – shapeshifting water spirit
- Hantu Demon (Philippine) – demon
- Hantu Raya (Malay) – demonic servant
- Harionago (Japanese) – humanoid female with barbed, prehensile hair
- Harpy (Greek) – birdlike human-headed death spirit
- Haugbui (Norse) – undead being who cannot leave its burial mound
- Havsrå (Norse) – saltwater spirit
- Helloi (Manipuri mythology) – celestial maidens, daughters of the Sky God Soraren
- Headless Horseman(European) – humanoid spirit who haunts or kills
- Headless Mule (Brazilian) – fire-spewing, headless, spectral mule
- Hecatonchires (Greek) – primordial giants with 100 hands and fifty heads
- Heikegani (Japanese) – crabs with human-faced shells, the spirits of warriors killed in the Battle of Dan-no-ura
- Heinzelmännchen (German) – household spirit
- Helead (Greek) – fen nymph
- Hellhound (Many cultures worldwide) – underworld dog
- Heracles (Greek) – gatekeeper of Olympus
- Hercinia (Medieval Bestiaries) – glowing bird
- Herensuge (Basque) – dragon
- Hesperides (Greek) – nymph daughters of Atlas
- Hidebehind (United States) – nocturnal forest creature
- Hiderigami (Japanese) – drought spirit
- Hieracosphinx (Ancient Egypt) – falcon-headed sphinx
- Hihi (Japanese) – baboon monster
- Hiisi (Finnish) – nature guardian
- hippalectryon (Greek)
- Hippocamp (Etruscan, Greek and Phoenician) – horse-fish hybrid
- Hippogriff (Medieval Bestiaries) – hybrid of a griffin and horse; a lion-eagle-horse hybrid
- Hippopodes (Medieval Bestiary) – horse-hoofed humanoid
- Hircocervus (Medieval Bestiary) – deer-goat hybrid
- Hitodama (Japanese) – ghosts of the newly dead, which take the form of fireballs
- Hitotsume-kozō (Japanese) – one-eyed childlike spirit
- Hob (English) – house spirit
- Hobbididance (English) – malevolent spirit
- Hobgoblin (Medieval) – friendly or amusing goblin
- Hodag (Native American) – frog-mammoth-lizard hybrid
- Hokhokw (Kwakiutl) – bird
- Hōkō (Japanese) – dog-like Chinese tree spirit
- Homa (Persian) – eagle-lion hybrid, similar to a griffin
- Hombre Caiman (Colombian) – human-alligator hybrid
- Hombre Gato (Latin America) – human-cat hybrid
- Homunculus (Alchemy) – small animated construct
- Hō-ō (Japanese) – rooster-swallow-fowl-snake-goose-tortoise-stag-fish hybrid
- Hoopoe – near passerine bird common to Africa and Eurasia that features in many mythologies in those continents
- Hoop snake – snake which rolls by taking its tail in its mouth
- Horned Serpent (Native American) – serpentine rain spirit
- Hotoke (Japanese) – deceased person
- Houri (Islamic) – heavenly beings
- Hraesvelg (Norse) – giant, who in eagle form, creates the wind by beating his wings
- Hrímþursar (Norse) – frost giants who are the main inhabitants of either Jotunheim or Niflheim
- Huaychivo (Mayan) – human-deer hybrid
- Huginn and Muninn (Norse) – pair of ravens associated with the Norse god Odin whose names mean Thought and Memory.
- Huldufólk (Icelandic/Faroese) – secret mound/rock dwelling elves
- Hulder (Scandinavian) – forest spirit
- Huli jing (Chinese) – nine-tailed fox spirit
- Huma (Persian) – regenerative fire bird
- Humbaba (Akkadian) – lion-faced giant
- Hundun (Chinese) – chaos spirit
- Hupia (Taíno) – nocturnal ghost
- Hyakume (Japanese) – hundred-eyes creature
- Hydra (Greek) – multi-headed water serpent/dragon
- Hydros (Medieval Bestiary) – snake whose poison causes the victim to swell up
- Hydrus (Medieval Bestiary) – snake from the Nile River that would kill crocodiles from the inside
- Hyōsube (Japanese) – hair-covered kappa
- Hypnalis (Medieval Bestiary) – snake that kills its victims in their sleep
- Hudhud (mythology) – Hoopoe
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