Adela of Champagne (French: Adèle; c. 1140 – 4 June 1206), also known as Adelaide and Alix, was Queen of France as the third wife of Louis VII. She was the daughter of Theobald II, Count of Champagne, and Matilda of Carinthia, and was named after her grandmother, Adela of Normandy.
Louis and Adela married on 18 October 1160, five weeks after his previous wife, Constance of Castile, died in childbirth. Queen Adèle was the mother of Louis VII's only son, Philip II, and of the Byzantine empress Agnes.
Adela was active in the political life of the kingdom, along with her brothers Henry I, Theobald V, and Guillaume aux Blanches Mains. Henry and Theobald were married to daughters of Louis VII and Eleanor of Aquitaine. Adela and her brothers felt their position threatened when the heiress of Artois, Isabella of Hainault, married Adèle's son Philip. Adèle formed an alliance with Hugh III, Duke of Burgundy, and Philip of Flanders, and even tried to interest Emperor Frederick Barbarossa. War broke out in 1181, and relations became so bad that Philip attempted to divorce Isabella in 1184.
Although her power decreased after the accession of Philip in 1180, Queen Adela acted as regent in 1190 while Philip was away on the Third Crusade. She returned to the shadows when he returned in 1192 but participated in the founding of many abbeys.
Queen Adela died on 4 June 1206 in Paris, Île-de-France, France, and was buried in the church of Pontigny Abbey near Auxerre.