Hephaestion (, alternative transliteration: Hephaistion; c. 356 BC – 324 BC), son of Amyntor, was a Macedonian nobleman and a general in the army of Alexander the Great. He was "... by far the dearest of all the king's friends; he had been brought up with Alexander and shared all his secrets." This friendship lasted throughout their lives, and was compared, by others as well as themselves, to that of Achilles and Patroclus.