Skyros, in some historical contexts Latinized Scyros, is an island in Greece. It is the southernmost island of the Sporades, an archipelago in the Aegean Sea. Around the 2nd millennium BC, the island was known as The Island of the Magnetes; later, it was consecutively known as Pelasgia, Dolopia, and finally Skyros. At 209 km2 (81 sq mi), it is the largest island of the Sporades, and had a population of about 3,000 in 2021.

Theseus was a divine hero and the founder of Athens from Greek mythology. The myths surrounding Theseus, his journeys, exploits, and friends, have provided material for storytelling throughout the ages.