The Nava Vihāra (Sanskrit: नवविहार "New Monastery", modern Nawbahār, Persian: نوبهار) were two Buddhist monasteries close to the ancient city of Balkh in northern Afghanistan. Historical accounts report it as flourishing as an important centre of Buddhism between the seventh and eleventh centuries CE. It may have been founded considerably earlier, perhaps in or after the reign of the Kushan emperor Kaniṣka, in the second century CE.