| Charsianon Χαρσιανόν, θέμα Χαρσιανοῦ | |
|---|---|
| Theme of the Byzantine Empire | |
| 863/873 – ca. 1072/3 | |
 Map of the Theme of Charsianon within the Byzantine Empire in 1000 AD. | |
| Capital | Charsianon (at first), Caesarea |
| Area | |
| • Coordinates | 39°44′25″N 35°50′10″E / 39.740217°N 35.836142°E |
| Historical era | Middle Ages |
• Establishment as a theme | 863–873 |
• Fall to the Seljuks | after ca. 1072/3 |
Charsianon (Greek: Χαρσιανόν) was the name of a Byzantine fortress and the corresponding theme (a military-civilian province) in the region of Cappadocia in eastern Anatolia (modern Turkey).