Philo of Alexandria, also called Philō Judæus, was a Hellenistic Jewish philosopher who lived in Alexandria, in the Roman province of Egypt.

Hellenistic Judaism was a form of Judaism in classical antiquity that combined Jewish religious tradition with elements of Hellenistic culture. Until the early Muslim conquests of the eastern Mediterranean, the main centers of Hellenistic Judaism were Alexandria in Egypt and Antioch in Turkey, the two main Greek urban settlements of the Middle East and North Africa, both founded in the end of the fourth century BCE in the wake of the conquests of Alexander the Great. Hellenistic Judaism also existed in Jerusalem during the Second Temple Period, where there was a conflict between Hellenizers and traditionalists.