Haymo of Halberstadt was a 9th-century German Benedictine monk who served as the bishop of Halberstadt. Born around 778, he studied at the monastery in Fulda alongside Rabanus Maurus and later traveled to Tours to learn from Alcuin. After serving as a chancellor at Fulda, he was appointed to his episcopal see in 840. Throughout his leadership, he focused on the spiritual welfare of his diocese, largely avoiding political entanglements at the court of King Louis the German.