Thessalonica (theme)

Theme of Thessalonica Θεσσαλονίκη, θέμα Θεσσαλονίκης
Theme of the Byzantine Empire
800s (decade)–1204 1242–1392
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.