| Tréduder | |
| Native Name: | Treduder |
| Commune Status: | Commune |
| Coordinates: | 48.6511°N -3.5611°W |
| Insee: | 22350 |
| Postal Code: | 22310 |
| Arrondissement: | Lannion |
| Canton: | Plestin-les-Grèves |
| Mayor: | Patricia Le Guéziec[1] |
| Term: | 2021 - 2026 |
| Intercommunality: | Lannion-Trégor Communauté |
| Elevation Min M: | 0 |
| Elevation Max M: | 108 |
| Area Km2: | 4.80 |
Tréduder (in French pronounced as /tʁedydɛʁ/; Breton: Treduder) is a commune in the Côtes-d'Armor department of Brittany in northwestern France.
Inhabitants of Tréduder are called Trédudérois in French.