East Thrace or Eastern Thrace, also known as Turkish Thrace or European Turkey, is the part of Turkey that is geographically a part of Southeast Europe. It accounts for 3.03% of Turkey's land area and 15% of its population. The largest city is Istanbul, which straddles the Bosporus between Europe and Asia. East Thrace is of historic importance as it is next to a major sea trade corridor and constitutes what remains of the once-vast Ottoman region of Rumelia. It is currently also of specific geostrategic importance because the sea corridor, which includes two narrow straits, provides access to the Mediterranean Sea from the Black Sea for the navies of five countries: Russia, Ukraine, Romania, Bulgaria, and Georgia. The region also serves as a future connector of existing Turkish, Bulgarian, and Greek high-speed rail networks.

Edirne Province is a Turkish province located in East Thrace. Part of European Turkey, it is one of only three provinces located entirely within continental Europe. Its area is 6,145 km2, and its population is 414,714 (2022). Edirne Province is bordered by Tekirdağ Province and Kırklareli Province to the east, and the Gallipoli peninsula of Çanakkale Province to the south-east. It shares international borders with Bulgaria to the north and Greece to the west. Edirne is the capital of the province, and the largest city. It is the only province of Turkey that borders Greece.