Agnes of Burgundy (or Agnes de Macon; c. 995-10 November 1068) was Duchess of Aquitaine by marriage to Duke William V and Countess of Anjou by marriage to Count Geoffrey II. She served as regent of the Duchy of Aquitaine during the minority of her son from 1039 until 1044.
She was the daughter of Otto-William, Count of Burgundy and Ermentrude de Roucy and a member of the House of Ivrea.
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First marriage: Duchess of Aquitaine
In 1019, she married Duke William V of Aquitaine by whom she had three children: William VII, Duke of Aquitaine, William VIII, Duke of Aquitaine and Agnes, Holy Roman Empress. William died on 31 January 1030, leaving his widow and their three young children, plus the three surviving children from his first two marriages. While married to William, Agnes gave many gifts to the abbey of Cluny.