| Plélan-le-Petit | |
| Native Name: | Plelann-Vihan |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason de la ville de Plélan-le-Petit (Côtes-d'Armor).svg |
| Coordinates: | 48.4347°N -2.2186°W |
| Insee: | 22180 |
| Postal Code: | 22980 |
| Arrondissement: | Dinan |
| Canton: | Plancoët |
| Mayor: | Didier Miriel[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Dinan Agglomération |
| Elevation Min M: | 64 |
| Elevation Max M: | 125 |
| Area Km2: | 21.23 |
| Image Flag: | Flag of Plélan-le-Petit.gif |
Plélan-le-Petit (in French pronounced as /plelɑ̃ lə pəti/; ; Gallo: Plélan) is a commune in the Côtes-d'Armor department of Brittany in northwestern France.
Inhabitants of Plélan-le-Petit are called plélanais in French.