Adélaide de Maurienne (c. 1100 - November 18, 1154) was the daughter of Humbert II of Savoy and Gisela of Burgundy, and niece of Pope Callistus II.

She became the second wife of Louis VI of France (1081-1137), whom she married on August 3, 1115, when she was 15 and he 35. They had six children, the second of whom became Louis VII of France. She was reputed to be "ugly," but attentive and pious, and with Louis she had six sons and two daughters:

• Philip (1116-1131), not to be confused with his brother of the same name; died from a fall from a horse
• Louis VII the Young (1120_1180), king of France.
• Henry (1121-1175), bishop of Beauvais (1149-1161) and then of archbishop of Reims (1161-1175)
• Hugh (c. 1123), died young
• Robert I of Dreux (c. 1123-1188), called Robert the Great, count of Dreux (1137-1184), count of Perche
• Constance (c. 1124-1180), married first (in 1140) Eustace IV of Boulogne, married second (in 1154) Raymond V of Toulouse
• Philip (c. 1125-1161), not to be confused with his elder brother; bishop of Paris
• Peter I of Courtenay (c. 1125-c. 1182), married Elizabeth of Courtenay

Afer Louis VI's death, she married Matthieu I, sire de Montmorency, with whom she had one child.

In 1153 she retired to the abbey of Montmartre, which she had founded with Louis VII. She died there on November 18, 1154.