Abbess Theuthild (or Theuthilde, or Thiathildis) was a ninth-century abbess of the important convent of Remiremont in the Vosges.
According to Michele Gaillard, Theuthild was responsible for a process of reform at the convent.
[1] Six of her letters survive, showing her correspondence with Emperor Louis the Pious, the Empress Judith and other high-ranking magnates.
[2] The letters are copied in a ninth-century manuscript now in Zurich (Zentralbibliothek Rh.
In the letter to Louis, Theuthild declared that she and her sisters had performed 800 masses, and sung the psalter a thousand times, for the sake of his soul and the souls of his family.