- Scylla and Charybdis
- Scythian Lamb
- Sea Witch
- Sea bishop
- Sea monk
- Sea monster
- Sea serpent
- Sea wolf
- Seduced by Moonlight
- Seelie
- Seere
- Sehite
- Sekhem Em Pet
- Sekhmet
- Seljord Serpent
- Selkie
- Selma
- Senmurv
- Serial killer
- Serpopard
- Sexual vampire
- Sexuality in Christian demonology
- Sha Wujing
- Shachihoko
- Shade
- Shadhahvar
- Shadow people
- Shahbaz
- Shaitan
- Shang Yang
- Sharlie
- Shax
- Shedeem
- Shedim
- Shedu
- Sheela-Na-Gig
- Sheela Na Gig
- Sheela Ny Gig
- Sheelanagigg
- Sheepsquatch
- Shellycoat
- Shen
- Sheng sheng
- Shenlong
- Shikigami
- Shinigami
- Shirime
- Shiru
- Shisa
- Shivshankari Yamanappa Mootageri
- Shivuverre
- Shoki
- Shongmaw
- Shony
- Shotgun Man
- Shriker
- Shtojzovalle
- Shtriga
- Shub-Niggurath
- Shui-Mu
- Shunka Warakin
- Shurale
- Shurdhi
- Shuten Dōji
- Shōjō
- Shōki
- Sidehill Gouger
- Sidehill gouger
- Sidehill gulcher
- Sidhe
- Sigben
- Sigbin
- Sile Ni Ghig
- Sileni
- Silenus
- Silky
- Simorgh
- Simple Tutorial
- Simurgh
- Sin-you
- Singa
- Siren
- Sirena
- Sireno
- Sirens
- Sirrush
- Sisiutl
- Sitri
- Six legged salamander
- Siyokoy
- Sjövættir
- Skanda
- Skeleton
- Skeleton warrior
- Skin-walker
- Skinwalker
- Skogsra
- Skookum
- Skull Churches
- Skunk Ape
- Skvader
- Sky woman
- Sleipner
- Sleipnir
- Slender Man
- Slepnir
- Sliocha nan Ron
- Slippry Skin
- Sluagh
- Smok Wawelski
- Snake
- Snakkur
- Snallygaster
- Snouter
- Sogpa
- Sombrerón
- Son of sam
- Songaomby
- Sorry cow
- Soteira
- Soucouyant
- Soucoyah
- Spaghetti tree
- Spear of Destiny
- Spearfinger
- Spectral Animals
- Spectral Hunt
- Spectre
- Sphinx
- Spirit
- Spirit Of The Coin
- Spiritual Warfare
- Splintercat
- Spoorn
- Spree killer
- Spriggan
- Spring Heeled Jack
- Sprite
- Sprite (creature)
- Sprite trap
- Squonk
- St. Elmo's fire
- Stalo
- Star People
- Stephan Bibrowski
- Stephen King
- Steven Edmonston
- Stheno
- Stolas
- Stollenworm
- Storm Hag
- Storsjöodjuret
- Strigoi
- Strigoica
- Strix
- Strong Toad
- Stronsay beast
- Stuhać
- Stymphalian Bird
- Stymphalide
- Su
- Su Kong Tai Djin
- Subrahmanya
- Succarath
- Succubus
- Sugaar
- Suiko
- Sumbha
- Sun Wukong
- Sunda
- Supernatural
- Superstition
- Surapadman
- Surma
- Surtr
- Surtur
- Surubim-Rei
- Suttung
- Svarbhānu
- Svarog
- Svartalfar
- Svartálfar
- Swan Maiden
- Sylph
- Symbol
- SysOp
- Szepasszony
- Sânziană
- Sōgen-bi
- Tailypo
- Takitaro
- Talos
- Tamaniu
- Tanin'iver
- Taniwha
- Tanngnjostr
- Tanngrisnir
- Tannin
- Tanuki
- Taotao Mona
- Tarakasura
- Taranis
- Tarasca
- Tarasque
- Tarbh-Uisge
- Tarbh uisge
- Tarot
- Tartarus
- Tase
- Tasmanian Globster
- Tatzelwurm
- Tau
- Taxonomy
- Tazelworm
- Tbo
- Teakettler
- Ted Bundy
- Teggie
- Teikolosha
- Teju Jagua
- Telesa
- Telesā
- Telosian
- Tengu
- Tenjoname
- Tennin
- Tennins
- Territorial Spirit
- Test Page
- Tethys
- Teumessian fox
- Teurst
- Teuz
- Text of Unas
- Tezcatlanextia
- Tezcatlipoca
- Thagirion
- Thanatos
- Thaumiel
- The Basics
- The Boogyman
- The Boston Strangler
- The Brocken
- The Dark Tower
- The Elder Scrolls
- The Five Pillars
- The Hook
- The Hungarian Sisters
- The Mummy
- The Mummy (Undead)
- The Quatermass Experiment
- The Sacred Family of Burma
- The Sacred Hairy Family of Burma
- The Twilight Zone
- The Vampire
- The Vampire (?????????)
- The Vampire (another version)
- The Vampire Chronicles
- The X-Files
- The dead
- The monster of Ravenna
- The noah family
- Theli
- Therianthropy
- Theutus
- Thevetat
- Things to do
- Thornton Road poltergeist
- Thoul (Dungeons & Dragons)
- Three-legged bird
- Thunderbird
- Tiamat
- Tiamat (Dungeons & Dragons)
- Tiangou
- Tianlong
- Tiefling
- Tigbalang
- Tigmamanukan
- Tik-Tik
- Tik-tik
- Tikbalang
- Tikiloshe
- Tilberi
- Tim Morse
- Tim Morss
- Tim Morss and Brett Tyler
- Timingila
- Tinonee ghost
- Tiphaine
- Titan
- Titania
- Titans
- Titlacahuan
- Tityrus
- Tiyanak
- Tizheruk
- Tjutjuna
- Tlahuelpuchi
- Tlaloc
- Tlazolteotl
- Tokoloshe
- Tom Fool
- Tommy Knocker
- Tommyknocker
- Tomor
- Tomte
- Tonal
- Tonenili
- Tonttu
- Toothgnasher
- Toothgrinder
- Topic:Tressyms
- Torbalan
- Tornarsuk
- Torture murder
- Totoima
- Toyol
- Transhumans
- Trauco
- Treant
- Trenti
- Tricephalus
- Triceps
- Trioditis
- Tripurasura
- Trishira
- Triton
- Tritopatore
- Trivia
- Troglodyte (Dungeons & Dragons)
- Troll
- Troll (Dungeons & Dragons)
- Trow
- Trowe
- Trunko
- Tsathoggua
- Tsovinar
- Tsuchigumo
- Tsuchinoko
- Tsukumogami
- Tsul 'Kalu
- Tsurube-otoshi
- Tuatha Dé
- Tuatha Dé Danann
- Tugarin Zmeyevich