Starting with A
Á Bao A Qu (Malay) - An entity that lives in the Tower of Victory in Chitor. Aatxe (Basque) - A spirit that takes the form of a bull.
Abassy (Yakuts) - Demons that have teeth of iron.
Abada (African) - Small type of unicorn reported to live in the lands of the African Congo. Äbädä (Tatar) - Forest spirit
Abaia (Melanesian) - Huge magical eel
Abarimon (Medieval Bestiaries) - Savage humanoid with backward feet. Abath (Malay) - One-horned animal
Abatwa (Zulu) - Little people that ride ants.
Abura-bō (Japanese) - Spectral fire from Shiga Prefecture, in which the shape of a monk can often be seen. Abura-sumashi (Japanese) - creature from a mountain pass in Kumamoto Prefecture. Acephali (Greek) - Headless humanoids
Acheri (Indian) - Disease-bringing ghost
Achiyalabopa (Puebloan) - Rainbow-feathered birds
Achlis (Roman) - Curious elk
Adar Llwch Gwin (Welsh) - Giant birds that understand human languages. Adaro (Solomon Islands) - Malevolent merfolk
Adhene (Manx) - Nature spirit
Adlet (Inuit) - Vampiric dog-human hybrid
Adroanzi (Lugbara) - Nature spirit
Adze (Ewe people) - An African vampiric-forest being.
Aerico (Greek) - Disease demon
Afanc (Welsh) - Lake monster (exact lake varies by story).
Agathodaemon (Greek) - Spirit of vinefields and grainfields. Agloolik (Inuit) - Ice spirit that aids hunters and fishermen. Agogwe (East Africa) - Small, ape-like humanoid.
Ahkiyyini (Inuit) - Animated skeleton that causes shipwrecks. Ahuizotl (Aztec) - Anthropophagous dog-monkey hybrid.
Aigamuxa (Khoikhoi) - Anthropophagous humanoid with eyes in its instep. Aigikampoi (Etruscan) - Fish-tailed goat
Aigamuxa (Khoikhoi) - Man-eating Ogres
Aitu (Polynesian) - Malevolent spirits or demons
Aitvaras (Lithuanian) - Household spirit
Ajatar (Finnish) - Dragon
Akabeko (Japanese) - Red cow involved in the construction of Enzō-ji in Yanaizu, Fukushima Akamataa (Japanese) - Snake spirit from Okinawa.
Akateko (Japanese) - Tree-dwelling monster
Akhlut (Inuit) - Orca-wolf shapeshifter
Akka (Finnish) - Female spirits or minor goddesses
Akki (Japanese) - Large, grotesque humanoid
Akkorokamui (Ainu) - Sea monster
Akuma (Japanese) - Evil spirit
Akupara (Hindu) - Giant turtle that supports the world.
Akurojin-no-hi (Japanese) - Ghostly flame which causes disease. Al (Armenian and Persian) - Spirit that steals unborn babies and livers from pregnant women. Ala (Slavic) - Bad weather demon
Alal (Chaldean) - Demon
Alan (Philippine) - Winged humanoid that steals reproductive waste to make children. Al Basti (Turkish) - Female night-demon
Alce (Heraldic) - Wingless griffin
Aleya (Bengali) - Spirit of a dead fisherman.
Alicanto (Chilean) - Bird that eats gold and silver.
Alicorn - Technically a unicorn's horn. In modern times is commonly misapplied to winged unicorns. Alkonost (Slavic) - Angelic bird with human head and breasts. Allocamelus (Heraldic) - Ass-camel hybrid
Allu (Akkadian and Sumerian) - Faceless demon
Almas (Mongolian) - Savage humanoid
Al-mi'raj (Islamic) - One-horned rabbit
Aloja (Catalan) - Female water spirit
Alom-bag-winno-sis (Abenaki) - Little people and tricksters Alp (German) - Male night-demon
Alphyn (Heraldic) - Lion-like creature, sometimes with dragon or goat forelegs. Alp-luachra (Irish) - Parasitic fairy
Al Rakim (Islamic) - Guard dog of the Seven Sleepers
Alseid (Greek) - Grove nymph
Alû (Assyrian) - Leprous demon
Alux (Mayan) - Little people
Amaburakosagi (Japanese) - Ritual disciplinary demon from Shikoku. Amala (Tsimshian) - Giant who holds up the world.
Amamehagi (Japanese) - Ritual disciplinary demon from Hokuriku. Amanojaku (Japanese) - Small demon
Amarok (Inuit) - Giant wolf
Amarum (Quechua) - Water boa spirit
Amazake-babaa (Japanese) - Disease-causing hag
Amemasu (Ainu) - Lake monster
Ammit (Ancient Egyptian) - Female demon with a body that was part lion, hippopotamus and crocodile. Amorōnagu (Japanese) - Tennyo from the island of Amami Ōshima....