| Consort: | yes |
| Marie of Brabant | |
| Succession: | Queen consort of France |
| Reign: | 21 August 1274 – 5 October 1285 |
| Coronation: | 24 June 1275 |
| Spouse: | Philip III of France |
| Issue: | Louis, Count of Évreux Blanche, Duchess of Austria Margaret, Queen of England |
| House: | House of Reginar |
| Father: | Henry III, Duke of Brabant |
| Mother: | Adelaide of Burgundy |
| Birth Date: | 13 May 1254 |
| Birth Place: | Leuven, Brabant, Holy Roman Empire |
| Death Place: | Les Mureaux, France |
| Burial Place: | Cordeliers Convent, Paris |
Marie of Brabant (13 May 1254 – 12 January 1322) was Queen of France from 1274 until 1285 as the second wife of King Philip III. Born in Leuven, Brabant, she was a daughter of Henry III, Duke of Brabant, and Adelaide of Burgundy.
Marie married the widowed Philip III of France on 21 August 1274. His first wife, Isabella of Aragon, had already given birth to three surviving sons: Louis, Philip and Charles.
Philip was under the strong influence of his mother, Margaret of Provence, and his minion, surgeon and chamberlain (Chambellan) Pierre de la Broce. Not being French, Marie stood out at the French court. In 1276, Marie's stepson Louis died under suspicious circumstances. Marie was suspected of ordering him to be poisoned. La Broce, who was also suspected, was imprisoned and later executed for the murder.
After the death of Philip III in 1285, Marie lost some of her political influence, and dedicated her life to their three children: Louis (May 1276 – 19 May 1319), Blanche (1278 – 19 March 1305) and Margaret (died in 1318). Her stepson Philip IV was crowned king of France on 6 January 1286 in Reims.
Together with Joan I of Navarre and Blanche of Artois, she negotiated peace in 1294 between England and France with Edmund Crouchback, the younger brother of Edward I of England.
Marie lived through Philip IV's reign and she outlived her children. She died in 1322, aged 67, in the monastery at Les Mureaux, near Meulan, where she had withdrawn to in 1316. Marie was not buried in the royal necropolis of Basilica of Saint-Denis, but in the Cordeliers Convent, in Paris. Destroyed in a fire in 1580, the church was rebuilt in the following years.
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