In the ancient Mediterranean world, oracle traditions played a significant role in guiding individuals, cities, and empires. These traditions, rooted in early divination practices, evolved over centuries to become established institutions such as the Oracle of Delphi in Greece and the Sibylline Oracles in Rome. This essay traces the origins and evolution of oracle traditions in ancient Greece and Rome, examining how they transformed from primitive forms of divination into revered institutions of prophetic guidance.