Rusa III was king of Urartu. He was called "Rusa Erimenahi" ("the son of Erimena"). He may have been the nephew or cousin of Rusa II.^[1] Little is known about his reign; his name was inscribed on a massive granary at Armavir and on a series of bronze shields from the temple of Khaldi found at Rusahinili, now held in the British Museum.^[2] There is considerable confusion over the identity of Rusa III, when he ruled, and his relationship to other kings or even the actual dates he ruled.^[3]

Rusa was the father of Sarduri IV.

• List of kings of Urartu