Under the Ptolemies thousands of Greek-speaking foreigners were resident in Egypt: they were active in the armed forces, in the administration, in commerce. In official and notarial documents they are identified by their ethnic, i.e. their real or fictive origin outside Egypt. The present work provides a complete inventory of the ethnics, which refer to Greek city-states (e.g. 'Athenian', 'Syracusan'), but also to regions in Greece (e.g. 'Cretan', 'Thessalian') or elsewhere (e.g. 'Thracian', 'Jew'). The data are incorporated in the database of the Prosopographia Ptolemaica and offer a diversified view of the Greek presence in Egypt between 323 and 30 BC.