A triskelion or triskele is a motif consisting of three interlocked spirals, or three bent human legs, or any similar symbol with three protrusions and a threefold rotational symmetry.^{[citation needed]} Both words are from Greek "τρισκέλιον" (triskelion) or "τρισκελής" (triskeles), "three-legged", from prefix "τρι-" (tri-), "three times" + "σκέλος" (skelos), "leg". Although it appears in many places and periods, it is especially characteristic of the Celtic art of the La Tène culture of the European Iron Age.

A triskelion is the symbol of Sicily, where it is called trinacria, as well as of the Isle of Man.

The triskelion symbol appears in many early cultures, including west's earliest known first astronomical calendar in Ireland at the famous megalithic tomb of Newgrange built around 3200 BCE, Mycenaean vessels, on coinage in Lycia, and on staters of Pamphylia (at Aspendos, 370–333 BC) and Pisidia. It appears as a heraldic emblem on warriors' shields depicted on Greek pottery.

Familiar as an ancient symbol of Sicily, the symbol dates back to when Sicily was part of Magna Graecia, the colonial extension of Greece beyond the Aegean.Pliny the Elder attributes the origin of the triskelion of Sicily to the triangular form of the island, the ancient Trinacria (from the Greek tri- (three) and akra (end, limb)), which consists of three large capes equidistant from each other, pointing in their respective directions, the names of which were Pelorus, Pachynus, and Lilybæum.^{[citation needed]}