| Theme of Sebasteia Σεβαστεία, θέμα Σεβαστείας | |
|---|---|
| Theme of the Byzantine Empire | |
| 911 – ca. 1074 | |
&sq=Qlik&lang=&file=File:Theme-sebastea_1000ad.png) Map of the Theme of Sebasteia within the Byzantine Empire in 1000 AD. | |
| Capital | Sebasteia |
| Historical era | Middle Ages |
• Established | 911 |
• de facto autonomy | ca. 1074 |
• Fall to the Seljuks. | ca. 1090 |
| Today part of | Turkey |
The Theme of Sebasteia (Greek: θέμα Σεβαστείας) was a military-civilian province (thema or theme) of the Byzantine Empire located in northeastern Cappadocia and Armenia Minor, in modern Turkey. It was established as a theme in 911 and endured until its fall to the Seljuk Turks in the aftermath of the Battle of Manzikert in 1071.