| Conflict: | Battle of Bayrudh |
| Date: | 643/4 |
| Place: | Bayrudh, near Hormizd-Ardashir |
| Result: | Muslim victory |
| Combatant1: | Rashidun Caliphate |
| Combatant2: | Sasanian Empire |
| Commander1: | Abu Musa Ashaari |
| Commander2: | Piruz |
| Strength1: | Unknown |
| Strength2: | Unknown |
The Battle of Bayrudh was fought between the Sasanians and the Rashidun Caliphate in 643/4. Before the battle took place, a group of Sasanian supporters rallied among a certain Piruz, who rebelled against the Rashiduns. They were, however, defeated at Bayrudh in 643/4.