Porphyrion is a Giant, and an opponent of Heracles in Greek mythology.
Porphyrion may also refer to: Porphyrion (radio galaxy), a giant radio galaxy Pomponius Porphyrion, a Latin grammarian and commentator on Horace Saxifraga sect. Porphyrion, a section of the genus Saxifraga Porphyrion (mythology), other figures in Greek mythology