Ajax \a-jax\ as a boy's name is of Greek origin. Greek mythology: the name of two heroes of the Trojan War as told by Homer's "Iliad". Ajax Telamonius, or Ajax the Great, was a Greek hero and legendary king of Salamis. Ajax Oileus, or Ajax the Lesser, was a Greek hero and legendary king of Locris.

Ajax has 1 variant form: Aias.