Plessix-Balisson
Plessix-Balisson 
    Ar Genkiz-Yuzhael  | |
|---|---|
Part of Beaussais-sur-Mer  | |
Location of Plessix-Balisson  | |
| Coordinates: 48°32′N 2°09′W / 48.53°N 2.15°W | |
| Country | France | 
| Region | Brittany | 
| Department | Côtes-d'Armor | 
| Arrondissement | Dinan | 
| Canton | Pleslin-Trigavou | 
| Commune | Beaussais-sur-Mer | 
Area 1  | 0.08 km2 (0.03 sq mi) | 
| Population  (2022)  | 81 | 
| • Density | 1,000/km2 (2,600/sq mi) | 
| Time zone | UTC+01:00 (CET) | 
| • Summer (DST) | UTC+02:00 (CEST) | 
| Postal code | 22650  | 
| Elevation | 35–57 m (115–187 ft) | 
| 1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries. | |
Plessix-Balisson (French pronunciation: [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.
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.