| Trégon | |
| Native Name: | Tregon-Poudour |
| Image Coat Of Arms: | Blason de la ville de Trégon (Côtes-d'Armor).svg |
| Coordinates: | 48.57°N -2.1825°W |
| Insee: | 22357 |
| Postal Code: | 22650 |
| Arrondissement: | Dinan |
| Canton: | Pleslin-Trigavou |
| Commune: | Beaussais-sur-Mer |
| Elevation Min M: | 3 |
| Elevation Max M: | 52 |
| Area Km2: | 6.12 |
| Population: | 282 |
| Population Date: | 2019 |
| Population Footnotes: | [1] |
Trégon (in French pronounced as /tʁeɡɔ̃/; Breton: Tregon-Poudour) is a former commune in the Côtes-d'Armor department of Brittany in northwestern France. On 1 January 2017, it was merged into the new commune Beaussais-sur-Mer.[2]
Inhabitants of Trégon are called trégonnais in French.