Tiridates III of Armenia was an Arsacid monarch who ruled from approximately 298 to 330. Raised in Rome following the assassination of his father, he became a skilled military leader and used Roman support to reclaim the Armenian throne from Persian forces. He is most famous for his conversion to Christianity, an act that led him to declare it the official state religion of Armenia. This decision made the kingdom the first nation to formally adopt the faith, profoundly altering the course of Armenian history.