Ermengarde of Tuscany (also Ermengarda; Hermengarda) (c. 901-931/2) was a medieval Italian noblewoman.
Her father was Adalbert II of Tuscany and her mother was, Bertha of Lotharingia.
Through Bertha, who was an illegitimate daughter of Lothair II, king of Lotharingia, Ermengarde was connected with the Carolingian dynasty.
[4] Ermengarde had a great influence on her husband, and often appeared in his diplomas entitled ‘most noble countess’ (noblissima comitissa).
[7] The tenth-century Italian chronicler, Liutprand of Cremona indicates that after the death of her husband, Ermengarde “obtained primacy in all Italy”.