三曲腿图（西西里语：Trisceli也称三曲枝图、三曲臂图，来自希腊语τρισκελης “三条腿的”）是指三条腿组成的对象，同时也是西西里岛的一个符号的名字。公元前8世纪，一支古希腊远征队伍寻找新的陆地时，发现了一个广袤的不知名岛屿。他们被这岛屿的丰富自然资源吸引。在环绕岛屿航行时，远征队发现岛屿有三个端点，分别是指向南方的Capu Pachinu，指向东方的Capu Peloru，和指向北方的Capu Lilibeu。他们称这个岛为特里纳克里亚（Trinacria），来自希腊语trinacrios，意指三角形。不久三曲腿图在岛上出现，并被希腊人用作为代表，直到现在。

A triskelion or triskele (which invariably has rotational symmetry) is a motif consisting of three interlocked spirals, three bent human legs, or three bent/curved lines extending from the center of the symbol. Both words are from Greek "τρισκέλιον" (triskelion) or "τρισκελής" (triskeles), "three-legged", from prefix "τρι-" (tri-), "three times" + "σκέλος" (skelos), "leg". A triskelion is the symbol of Sicily, where it is called trinacria, as well as of the Isle of Man, Brittany, and the town of Füssen in Germany.