Hellenion (Greek: Ἑλλήνιον) is the surviving pagan worship of the Greek gods. The term is not always used in a strict religious sense and has been used to refer to:
- Hellenion (Naucratis), an Ancient Greek sanctuary in Naucratis of Egypt (founded in 6th c. BC)
- Hellenion (Sparta), a temple of Zeus Sellanios in Sparta
- Hellenion (Cairo), a short-lived association founded in early 1900s by the Greek community of Egypt.
- Hellenion (USA), an active Hellenic Neopagan organization, founded in 2002.