legendary beings list : S

• Saci (Brazilian) - One-legged nature-spirit
• Sagari (Japanese) - Horse's head that dangles from trees on Kyūshū
• Sakabashira (Japanese) - Haunted pillar, installed upside-down
• Salamander (Alchemy) - Fire elemental
• Samebito (Japanese) - Shark-man servant of the dragon king of the sea.
• Samem (South America) and (Japanese)- Human-frog hybrid.
• Samodiva (Slavic) - Nature spirit
• Sandwalker (Arabian) - Camel-stealing, giant arthropod
• Sânziană (Romanian) - Nature spirit
• Sarimanok (Philippine) - Bird of good fortune
• Sarngika (Hindu) - Bird spirit
• Sarugami (Japanese) - Wicked monkey spirit which was defeated by a dog
• Satori (Japanese) - Mind-reading humanoid
• Satyr (Greek) - Human-goat hybrid and fertility spirit
• Satyrus (Medieval Bestiary) - Apes who always bear twins, one the mother loves, the other it hates
• Sceadugenga (English) - Shapeshifting undead
• Scitalis (Medieval Bestiaries) - Snake which mesmerizes its prey
• Scorpion Man (Sumerian) - Human-scorpion hybrid
• Scylla (Greek) - Human-snake-wolf hybrid with a snake's tail, twelve wolf legs, and six long-necked wolf heads
• Sea-bee (Heraldic) - Fish-tailed bee
• Sea monk (Medieval folklore) - Fish-like humanoid
• Sea monster (Worldwide) - Giant, marine animals
• Sea serpent (Worldwide) - Serpentine sea monster
• Sea-Wyvern (Heraldic) - Fish-tailed wyvern
• Seko (Japanese) - Water spirit which can be heard making merry at night
• Selkie (Faroese, Icelandic, Irish, and Scottish) - Human-seal shapeshifter
• Senpoku-Kanpoku (Japanese) - Human-faced frog which guides the souls of the newly deceased to the graveyard
• Seps (Medieval Bestiaries) - Snake with highly corrosive venom
• Serpent (Worldwide) - Snake spirit
• Serpopard (Ancient Egypt) - Serpent-leopard hybrid
• Shachihoko (Japanese) - Tiger-carp hybrid
• Shade (Worldwide) - Spiritual imprint
• Shahbaz (Persian) - Giant eagle or hawk
• Shang-Yang (Chinese) - Rain bird
• Shedim (Jewish) - Chicken-legged demon
• Shedu (Akkadian and Sumerian) - Protective spirit with the form of a winged bull or lion with a human head
• Shellycoat (English, Scottish and German, as schellenrocc) - Water spirit
• Shen (Chinese) - Shapeshifing sea monster
• Shenlong (Chinese) - Weather dragon
• Shibaten (Japanese) - Water spirit from Shikoku
• Shikigami (Japanese) - Child-sized servant spirit
• Shiki-ōji (Japanese) - Child-sized servant spirit
• Shikome (Japanese) - Underworld hag
• Shin (Japanese) - Giant clam which creates mirages
• Shiro-bōzu (Japanese) - White, faceless spirit
• Shiryō (Japanese) - Spirit of a dead person
• Shisa (Japanese) - Lion-dog hybrid
• Shishi (Chinese) - Protective animal
• Shōjō (Japanese) - Red-haired sea-sprites who love alcohol
• Shōkera (Japanese) - Creature that peers in through skylights
• Shtriga (Albanian) - An evil or dangerous witch
• Shui Gui (Chinese) - Drowned ghost
• Shunoban (Japanese) - Red-faced ghoul
• Shuten-dōji (Japanese) - Oni
• Sídhe - (Irish and Scottish) - Ancestral or nature spirit
• Sigbin (Philippine) - Goat-like vampire
• Sileni (Σειληνοί) (Greek) - Bald, fat, thick-lipped, and flat-nosed followers of Dionysus
• Simargl (Slavic) - Winged dog
• Simurgh (Persian) - Dog-lion-peacock hybrid
• Singa (Batak) - Feline animal
• Sint Holo (Choctaw) - Serpentine rain spirit
• Siren (Greek) - Human-headed bird
• Sirin (Slavic) - Demonic human-headed bird
• Sirrush (Akkadian) - Dragon with aquiline hind legs and feline forelegs
• Sisiutl (Native American) - Two-headed sea serpent
• Si-Te-Cah (Paiute) - Red-haired giants
• Sjörå (Norse) - Freshwater spirit
• Sjövættir (Norse) - Sea spirit
• Skin-walker (Native American and Norse) - Animal-human shapeshifter
• Skogsrå (Scandinavian) - Forest spirit
• Skookum (Chinook Jargon) - Hairy giant
• Skrzak (Slavic) - Flying imp
• Sky Women (Polish) - Weather spirit
• Sluagh (Irish and Scottish) - Restless ghost
• Sodehiki-kozō (Japanese) - Invisible spirit which pulls on sleeves
• Sōgenbi (Japanese) - Fiery ghost of an oil-stealing monk
• Soragami (Japanese) - Ritual disciplinary demon
• Soraki-gaeshi (Japanese) - Sound of trees being cut down, when later none seem to have been cut
• Sorobanbōzu (Japanese) - Ghost with an abacus
• Sōtangitsune (Japanese) - Fox spirit from Kyoto
• Soucouyant (Trinidad and Tobago) - Vampiric hag who takes the form of a fireball at night
• Spearfinger (Cherokee) - Sharp-fingered hag
• Spectre (Worldwide) - Terrifying ghost
• Sphinx (Greek) - Winged lion with a woman's head
• Spiriduş (Romanian) - Little people
• Spriggan (Cornish) - Guardians of graveyards and ruins
• Sprite (Medieval folklore) - little people, ghosts or elves
• Strigoi (Romanian) - Vampire
• Strix (Roman) - Vampiric bird
• Struthopodes (Medieval Bestiaries) - Humanoid whose males have enormous feet, and females have tiny feet
• Strzyga (Slavic) - Vampiric undead
• Stuhać (Slavic) - Malevolent mountain spirit
• Stymphalian Bird (Greek) - Metallic bird
• Suangi (New Guinea) - Anthropophagous sorcerer
• Succubus (Medieval folklore) - Female night-demon
• Sudice (Slavic) - Fortune spirit
• Sunakake-baba (Japanese) - Sand-throwing hag
• Sunekosuri (Japanese) - Small dog- or cat-like creature that rubs against a person's legs at night
• Surma (Finnish) - Hellhound
• Svartálfar (Norse) - "swart-elves", Cavern spirit
• The Swallower (Ancient Egyptian) - Crocodile-leopard-hippopotamus hybrid
• Swan maiden (Worldwide) - Swan-human shapeshifter
• Sylph (Alchemy) - Air elemental
• Sylvan (Medieval folklore) - Forest spirit
• Syrbotae (Medieval Bestiaries) - African giant
• Syrictæ (Medieval Bestiaries) - Reptilian humanoid