Al-Mundhir ibn al-Ḥārith (), known in Greek sources as (Flavios) Alamoundaros (), was the king of the Ghassanid Arabs from 569 to circa 581. A son of Al-Harith ibn Jabalah, he succeeded his father both in the kingship over his tribe and as the chief of the Byzantine Empire's Arab clients and allies in the East, with the rank of patricius. Despite his victories over the rival Persian-backed Lakhmids, throughout Mundhir's reign his relations with Byzantium were lukewarm due to his staunch Monophysitism. This led to a complete breakdown of the alliance in 572, after Mundhir discovered Byzantine plans to assassinate him. Relations were restored in 575 and Mundhir secured from the Byzantine emperor both recognition of his royal status and a pledge of tolerance towards the Monophysite Church.