Arbayistan
| Arbāyistān | |||||||||
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| Province of the Sasanian Empire | |||||||||
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 Map showing the Roman-Sasanian borders | |||||||||
| Capital | Nisibis | ||||||||
| History | |||||||||
| Historical era | Late Antiquity | ||||||||
• Established | 262 | ||||||||
• Peace of Acilisene | 363 | ||||||||
• Annexed by the Rashidun Caliphate | 638 | ||||||||
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| Today part of | |||||||||
Arbāyistān (Parthian: