This chapter focuses on questions of identity more clearly and provides an analysis of its different implications, to show how the communities of the gymnasia of Hellenistic Egypt, while following traditions of Greek character, were thoroughly embedded in the socio-cultural world of the country in which they lived. It is argued that the members of the gymnasium displayed complex identities, which could encompass features deriving from various traditions; this goes beyond a simplistic interpretation and understanding of ethnicity. Beyond strict ethnic designations, Ptolemaic society also functioned in a less exclusive fashion, according to cultural definitions: the Ptolemaic category of Hellenes ‘Greeks’ was applied to people who displayed a certain degree of knowledge of Greek language and culture, not only to those who were of strict Greek ethnicity. As the prime institution of Greek cultural traditions, the gymnasium operated as the quintessential ‘association of the Hellenes’: the place where those who were willing to go Greek could express themselves as a well-defined group of people, while upholding specific aspects of Greek life. However, it is shown how the gymnasium’s members stretched over different layers of (normally) the middle and upper strata of local society and shared many features, which were foreign to Greek traditions and thought, including specific onomastic choices, religious practices, or marriage patterns. ‘Those of the gymnasium’ were fully embedded in and deeply intertwined with the local population—to the point that they essentially formed a part of it: they were the ‘Greeks’ of Egypt.