Athenagoras may refer to:
- Athenagoras of Ephesus, a tyrant of Ephesus around the 6th century BC
- Athenagoras of Syracuse, a statesman and military leader in Syracuse during the Sicilian Expedition (415 BC-413 BC)
- Athenagoras of Macedon, a general serving Philip V and Perseus
- Saint Athenagoras of Athens, aka Saint Athenagorus the Apologist (circa 133-190), early Christian philosopher
- Patriarch Athenagoras (1886–1972), Patriarch of Constantinople from 1948 to 1972
- Athenagoras (Fell), a 1682 biography of Athenagoras of Athens by British theologian John Fell