A buskin is a knee- or calf-length boot made of leather or cloth, enclosed by material, and laced, from above the toes to the top of the boot, and open across the toes. A high-heeled version was worn by Athenian tragic actors (to make them look taller). It was also worn by hunters, and soldiers in Ancient Greek, Etruscan, and Roman societies, to protect the lower legs against thorns, dirt, etc.

The word buskin, only recorded in English since 1503 meaning "half boot", is of unknown origin, perhaps from Old French brousequin (in modern French brodequin) or directly from its Middle Dutch model brosekin "small leather boot". Figurative senses relating to tragedy are from the word being used (since 1570) to translate Greek kothornos (Greek: κόθορνος) or Latin cothurnus, the high, thick-soled boot worn in Athenian tragedy; contrasted with sock (from Latin soccus), the low shoe worn by comedians.

Byzantine emperors were formally clad in purple buskins, embroidered in gold with double-headed eagles.