| Conflict: | Siege of Singara |
| Partof: | the Perso-Roman wars of 337–361 |
| Date: | 360 |
| Place: | Singara, Mesopotamia |
| Result: | Sasanian victory |
| Combatant1: | Roman Empire |
| Combatant2: | Sasanian Empire |
| Commander1: | Constantius II |
| Commander2: | Shapur II |
| Strength1: | Legio I Parthica Legio I Flavia Constantia |
The siege of Singara took place in 360, when the Sasanian Empire, under Shapur II, besieged the town of Singara, held by the Roman Empire. The Sasanians successfully captured the town from the Romans.
The wall was breached after some days by battering ram, and the town fell. The 1st Flavian and 1st Parthian legions which had formed the garrison, as well as the inhabitants of Singara, were sent into captivity in Sasanid Persia.
. Michael Whitby. The Cambridge History of Greek and Roman Warfare, Volume 2 Rome from the Late Republic to the Late Empire . Cambridge University Press. 2007. 978-0521782746. Philip . Sabin . Philip Sabin. Hans . van Wees . Michael . Whitby .