Jean de Beaumanoir | |
|---|---|
| Breton Knight | |
 Blason of Jean de Beaumanoir | |
| Born | 1310 |
| Died | 1366/1367 |
| Nationality | Breton |
| Spouse(s) | Tiphaine de Chemillé, Marguerite de Rohan |
Jean, or Jehan de Beaumanoir, marshal of Brittany for Charles of Blois, and captain of Josselin, is remembered for his share in the famous Combat of the Thirty during the War of Breton Succession (1341–1364) between the warring parties of competing claimants for the Dukedom.