Hormizd II was king of the Sasanian Empire. He ruled for seven years and five months, from 303 to 309. He was a son and successor of Narseh.
During his reign, the Kingdom of Armenia had recently declared Christianity as its official religion, thus leaving its ancient Zoroastrian heritage that it shared with Sasanian Iran. Hormizd II's reign was also marked by internal turmoil, which he successfully managed to deal with it. Hormizd II was also successful in his efforts in the west, defeating and killing the Ghassanid king in Syria. His reign was, however, cut short by the intrigues of the Iranian nobility, that killed him in a secluded place.
He was succeeded by his son Adur Narseh, who after a few months of reigning was also killed by the nobility. They instead installed Hormizd II's infant son Shapur II on the throne.