Saint-Pôtan (French pronunciation: [sɛ̃ potɑ̃]; Breton: Sant-Postan) is a commune in the Côtes-d'Armor department of Brittany in northwestern France.

In the village of Saint-Pôtan is a manor house now called «Le Vaumeloisel», which used to be a chateau before being destroyed in the French Revolution.

This chateau once welcomed the Duchess Anne of Brittany, who married two French kings, and is now a family house.

There are train stations in Lamballe, Saint-Malo and Saint-Brieuc which have links to Brest and Gare Montparnasse (Paris).

Saint-Pôtan is also ideally sitatuated for air travel as Dinard–Pleurtuit–Saint-Malo Airport is only about 15 km away with links to England and the Channel Islands.