Arguments about the nature of late Sasanian imperial involvement in Oman have become quite polarised over the past few decades. Historians and archaeologists have used their different caches of evidence to suggest quite variant conclusions concerning the extent of the Sasanians' imperial involvement in south-east Arabia and the impact that this involvement may have had on the prosperity of Omani local agriculture and the economy there. This article, however, seeks to demonstrate that the evidence of literary sources for the late pre-Islamic history of south-east Arabia, written primarily in Arabic by Muslims several centuries after the events being described, can be placed alongside other written evidence for the late Sasanian empire to suggest a picture of late Sasanian imperial involvement in Oman that is not all that far removed from the conclusions reached by many archaeologists working in the region. The article demonstrates that late Sasanian imperial interest in Oman may not have led to the intense settlement and agricultural development of the coastal plain sometimes suggested, but that there was nonetheless a significant place for Oman within Er an sahr, the territory of the king of kings. K E Y W O R D S empire and imperialism, Iran, late antiquity, Oman, Sasanians wileyonlinelibrary.com/journal/aae Arab Arch Epig. 2017;28:264-284.