| Plessix-Balisson | |
| Native Name: | Ar Genkiz-Yuzhael |
| Image Coat Of Arms: | Blason de la ville de Plessix-Balisson (Côtes-d'Armor).svg |
| Coordinates: | 48.53°N -2.15°W |
| Insee: | 22192 |
| Postal Code: | 22650 |
| Arrondissement: | Dinan |
| Canton: | Pleslin-Trigavou |
| Commune: | Beaussais-sur-Mer |
| Elevation Min M: | 35 |
| Elevation Max M: | 57 |
| Area Km2: | 0.08 |
| Population: | 98 |
| Population Date: | 2019 |
| Population Footnotes: | [1] |
Plessix-Balisson (in French pronounced as /plɛsi balisɔ̃/; Breton: Ar Genkiz-Yuzhael) 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]
With an area of only eight hectares, Plessix-Balisson was the smallest commune of the region and the second smallest in France, after Castelmoron-d'Albret.