This article needs additional citations for verification. (December 2021)
Abgar IX Severus was king of Osroene.
Abgar succeeded his father, Abgar VIII in 212. In 213 Abgar IX and his son were summoned to Rome and murdered at the orders of Caracalla. A year later Caracalla ended the independence of Osroene and incorporated it as a province into Roman Empire.
- Ball, Warwick (2000). Rome in the east: The Transformation of an empire. Routledge. ISBN 0-415-11376-8.
- Ross, S.K. (2000). Roman Edessa: Politics and Culture on the Eastern Fringes of the Roman Empire, 114 - 242 C.E. Taylor & Francis. ISBN 978-1-134-66063-6.