Æthelburh of Wilton was a West Saxon princess and a Benedictine nun who served as the abbess of Wilton Abbey in England. According to a 15th-century poem, she was the widow of the ealdorman Weohstan, who helped found the convent in the late 8th century. While some historians dispute the timeline of the abbey's foundation, she is traditionally identified as the sister of King Ecgberht of Wessex. She died around 810 and is recognized as a Catholic saint.