Adelaide, Abbess of Vilich was a Benedictine nun and leader of monastic communities in the late 10th and early 11th centuries. Born around 970 to the Count of Geldern, she was a descendant of King Henry the Fowler. After being educated at the convent of St. Ursula, she was appointed abbess of the Vilich community founded by her parents. She later expanded her responsibilities by becoming the head of St. Mary im Kapitol in Cologne, where she became known for her significant charitable work.