Ordoño III was a king of the Kingdom of León, ruling from 951 to 956. He was the son of King Ordoño II and is known for his efforts to strengthen the kingdom during a time of conflict with the Muslim states in the Iberian Peninsula. His reign was marked by military campaigns aimed at reclaiming territories and consolidating power. During his rule, Ordoño III faced challenges from both internal factions and external enemies. He is often remembered for his attempts to maintain stability and promote the Christian faith, which were significant themes in the history of the Reconquista. His reign ended with his death in 956, after which he was succeeded by his brother, Sancho I.