Thessalonica (theme)

Theme of Thessalonica Θεσσαλονίκη, θέμα Θεσσαλονίκης
Theme of the Byzantine Empire
800s (decade)–1204 1242–1392 1403-1423
Map of Byzantine Greece ca. 900 AD, with the themes and major settlements
Capital	Thessalonica
Historical era	Middle Ages
• Established	809
• Fourth Crusade	1204
• Recovery by Nicaean Empire	1242
• Captured by Ottomans	1392
Today part of	Greece

The Theme of Thessalonica (Greek: Θέμα Θεσσαλονίκης) was a military-civilian province (thema or theme) of the Byzantine Empire located in the southern Balkans, comprising varying parts of Central and Western Macedonia and centred on Thessalonica, the Empire's second-most important city.