Grimald, Latinised Grimaldus, was abbot of Weissenburg Abbey, abbot of the Abbey of Saint Gall (841–872), arch-chaplain of the East Frankish king Louis the German (848–870) and chancellor. He was one of the founders of scholarly education in the East Franconian Empire and in St. Gall.

The Abbey of Saint Gall is a dissolved abbey (747–1805) in a Catholic religious complex in the city of St. Gallen in Switzerland. The Carolingian-era monastery existed from 719, founded by Saint Othmar on the spot where Saint Gall had erected his hermitage. It became an independent principality between 9th and 13th centuries, and was for many centuries one of the chief Benedictine abbeys in Europe. The library of the Abbey is one of the oldest monastic libraries in the world.