A siege of Martyropolis occurred in Autumn of 531 during the Iberian War between the Sasanian Empire under Kavadh I and Byzantine Empire under Justinian I. A Roman raid from Martyropolis triggered the Sasanians to launch a siege on the newly fortified frontier city. Initially, the Sasanians had the upper hand, but a series of political events and logistical issues led them to withdraw. It was the last conflict of the Iberian War.