| Margaret de Courtenay | |
|---|---|
| Marchioness of Namur | |
| Reign | 1229–1237 |
| Countess consort of Vianden | |
| Reign | 1217–1252 |
| Born | c. 1194 |
| Died | 17 July 1270 (aged 75–76) Marienthal |
| Burial | Marienthal monastery |
| Spouse | Raoul, Lord of Issoudun Henry I, Count of Vianden |
| Issue | Matilda of Vianden Philip I of Vianden Henry I van Vianden Yolanda of Vianden Frederic of Vianden Peter of Vianden |
| House | House of Courtenay (by birth) House of Vianden (by marriage) |
| Father | Peter II of Courtenay |
| Mother | Yolanda of Flanders |
Margaret, Marchioness of Namur (c. 1194 – Marienthal, 17 July 1270) was ruling Marchioness of Namur, from 1229 to 1237. She was the daughter of Peter of Courtenay (d. 1219), Latin Emperor of Constantinople (1216-1219) and Yolanda of Flanders (d. 1219). By marriage to Henry I, Count of Vianden (d. 1252), she was Countess-consort of Vianden.