Alix, Duchess of Brittany
| Alix | |
|---|---|
Alix represented on a window in Chartres Cathedral | |
| Duchess of Brittany | |
| Reign | April 1203 – 21 October 1221 |
| Predecessor | Arthur I |
| Successor | John I |
| Co-ruler | Peter I (1213–1221) |
| Regents | Guy of Thouars (1203–1206) Philip II of France (1206–1213) |
| Born | 1200 Brittany |
| Died | 21 October 1221 (aged 20–21) |
| Burial | 24 November 1225 |
| Spouse | |
| Issue | John I, Duke of Brittany Yolande, Countess of Penthièvre |
| House | Thouars |
| Father | Guy of Thouars |
| Mother | Constance, Duchess of Brittany |
Alix of Thouars (1200 – 21 October 1221), whose name may also be spelled Alis or Alice, was the Duchess of Brittany from 1203 until her death. She was also Countess of Richmond in the peerage of England.