Ammonius () of Alexandria was the name of several people from ancient history: Ammonius of Alexandria, ancient Olympic athlete who won the stadion race in the 131st Olympiad in 256 BCE Ammonius of Alexandria, ancient grammarian Ammonius of Alexandria (Christian philosopher), philosopher of the 3rd century CE Ammonius (Alexandrian monk), 5th century CE Christian monk

See also Ammonius Saccas