Marie Capet, Countess of Champagne (1145 - 1198), was the elder daughter of Louis VII of France and his first wife, Eleanor of Aquitaine. In about 1164, Marie married Henry I, Count of Champagne. They had two sons: Henry II (c.1166-1197), Count of Champagne, also became King of Jerusalem, and his younger brother Theobald (or Thibaut) III (c.1179-1201), Count of Champagne (1197-1201).

After Henry I's death in 1181, Marie acted as regent from 1181 to 1187.

Marie is remembered today mainly for her role in the heresy that was the target of the Albigensian Crusade. She was also a patron of literature, including Andreas Capellanus, who served in her court, and Chretien de Troyes.

In her court, the insitution of marriage was repelled and forbidden for being contrary to the rule of love.