The Thracesian Theme (Greek: Θρᾳκήσιον θέμα, Thrakēsion thema), more properly known as the Theme of the Thracesians (Greek: θέμα Θρᾳκησίων, thema Thrakēsiōn, often simply Θρᾳκήσιοι, Thrakēsioi), was a Byzantine theme (a military-civilian province) in western Asia Minor (modern Turkey). Created either in the mid-7th or the early 8th century as the cantonment of the former Army of Thrace, whence it was named, it was one of the larger and more important themes of the Empire throughout its existence. The Thracesian Theme was one of the longest-lived themes, surviving until the region was conquered by the Turks in the early 14th century.