Salmoneus - Mortal king, son of Aeolus and Enrate, brother of Sisyphus and Athamas et al, husband of Alcidice, father of Tyro. King of Salmonia.
Sarpedon (i) - Mortal, son of Zeus and Europa, brother of Minos and Rhadamanthys. King of Lycia, father of Evander and Antiphates.
Sarpedon (ii) - Mortal, son of Zeus and Deidamia, grandson of Sarpedon. King of Lycia, killed in defence of Troy.
Scamander – Potamoi god, son of Oceanus and Tethys, husband of Idaia, father of Teucer. God of the River Scamander, Trojan ally during Trojan War.
Sciron (i)- Mortal prince, son of Pylas. Prince of Megara.
Sciron (ii) - Mortal, potential son of Poseidon, robber encountered by Thesus
Scylla (i) – Sea monster, daughter of Phorcys and Ceto. Terrorised the Strait of Messina alongside Charybdis.
Scylla (ii) - Mortal princess, daughter of Nisus and Habrote. Princess of Megara.
Selene - Second generation Titan, daughter of Hyperion and Theia. Greek goddess of the Moon.
Sinis - Mortal, son of Polypemon and Sylea, or Poseidon, bandit of the Saronic Gulf
Sinon - Mortal hero, son of Aesimus, hero of the Trojan War
Sirens – Transformed Naiad nymphs, daughters of Achelous. Located upon the Island of the Sirens and encountered by the Argonauts and Odysseus.
Sisyphus - Mortal king, son of Aeolus and Enrate, brother of Salmoneus and Athamas et al, husband of Tyro, father of Almus, Glaucus, Oryntion and Thersander. King of Ephyra.
Sparta - Mortal Queen, daughter of Eurotas, wife of Lacedaemon, mother of Amyclas and Eurydice. Queen of Laconia.
Sphinx – Monstrous beast, offspring of Orthrus and the Chimera. Terrorised Thebes until arrival of Oedipus.
Steropes – First generation Cyclops, son of Ouranos and Gaia, brother to Agres and Brontes.
Stilbon - Astra Planeta god, son of Astraeus and Eos. Greek god of the planet Mercury.
Stheneboea - Mortal queen, daughter of Iobates, wife of Proetus. Queen of Tiryns.
Sthenelus - Mortal king, son of Perseus and Andromeda, husband of Nicippe, father of Eurystheus. King of Mycenae and Tiryns.
Sthenno - Gorgon, daughter of Phorcys and Ceto, sister of Euryale and Medusa. Personification of deadly submerged rocks.
Strophius - Mortal king, son of Crisus and Antiphateia, husband of Anaxiba, father of Pylades and Astydameia, King of Phocis
Stymphalian Birds - Deadly birds, pets of Ares, encountered by both Heracles and the Argonauts.
Syceus - Gigante, son of Gaia
Syrinx – Naiad nymph, daughter of the Potamoi Ladon, loved by Pan
Styx – Oceanid, daughter of Oceanus and Tethys, lover of Pallas, mother to Zelos, Nike, Bia and Cratus. Greek goddess of Hatred.
