| Conflict: | Battle of Cadoret |
| Partof: | the Breton War of Succession |
| Date: | 17 June 1345 |
| Place: | Les Forges, Duchy of Brittany France |
| Coordinates: | 48.019°N -2.646°W |
| Result: | Charles of Blois retreat |
| Combatant1: | House of Montfort, Brittany Kingdom of England |
| Combatant2: | House of Blois, Brittany Kingdom of France |
| Commander1: | Sir Thomas Dagworth |
| Commander2: | Charles of Blois |
| Strength1: | About 500 |
| Strength2: | About 300 |
| Casualties1: | Unknown |
| Casualties2: | Unknown |
The Battle of Cadoret took place on the moorland of Cadoret near Lanouée (commune of Les Forges) in 1345 as part of the War of Succession of Brittany (1341–1365).
The battle occurred after the victorious siege of the city of Quimper by Charles of Blois in 1344.
Thomas Dagworth, was en route to Ploërmel through Oust à Cadoret. Opposite, Charles of Blois and his army arrived by the Landes de Cadoret. The two forces engaged and the fight lasted the entire afternoon. Caught under a rain of arrows from Welsh archers, the army of Charles suffered many losses.
The French captains Galois de la Heuse and Péan of Fontenay were made prisoners and Charles abandoned the field.