Cyclops is an ancient Greek satyr play by Euripides, based closely on an episode from the Odyssey. It would have been the fourth part of a tetralogy presented by Euripides in a dramatic festival in 5th Century BC Athens. The date of its composition is unknown, but it was probably written late in Euripides' career. It is the only complete satyr play extant.

In Greek mythology, a satyr, also known as a silenus or silenos, and sileni (plural), is a male nature spirit with ears and a tail resembling those of a horse, as well as a permanent, exaggerated erection. Early artistic representations sometimes include horse-like legs, but, by the sixth century BC, they were more often represented with human legs. Comically hideous, they have mane-like hair, bestial faces, and snub noses and they always are shown naked. Satyrs were characterized by their ribaldry and were known as lovers of wine, music, dancing, and women. They were companions of the god Dionysus and were believed to inhabit remote locales, such as woodlands, mountains, and pastures. They often attempted to seduce or rape nymphs and mortal women alike, usually with little success. They are sometimes shown masturbating or engaging in bestiality.