Hecatoncheir may refer to:
- The boss from Final Fantasy III.
- The Eidolon from Final Fantasy XIII.
- The enemy family from Final Fantasy XIV.
- The enemy family from Final Fantasy Dimensions.
- The boss from Final Fantasy Dimensions.
- The summon from Final Fantasy Dimensions II.
Hecatoncheires were children of Gaia and Uranus who were thrown into Tartarus as soon as they were born. They were released by Zeus, and aided him in overthrowing Cronos. They were giants depicted with one hundred arms (and sometimes even fifty heads). The name (Εκατόγχειρες - Hecatonchires) is of Greek origin: Hecaton (εκατόν-) means one hundred and chires (-χείρες) means hands.The