Hemma was a 9th-century queen consort of East Francia, born into the Elder House of Welf in Bavaria. As the wife of King Louis the German, she became the first queen of the East Frankish realm following the division of the Carolingian Empire in 843. She was the daughter of Count Welf I and Hedwig, and her sister Judith was the empress wife of Louis the Pious. After receiving the Obermünster Abbey in Regensburg, she lived through significant dynastic shifts until her death in 876.