Riec-sur-Bélon (French pronunciation: [ʁjɛk syʁ belɔ̃]; Breton: Rieg) is a commune in the Finistère department of Brittany in north-western France.

[3] Inhabitants of Riec-sur-Bélon are called in French Riécois.

The municipality launched a linguistic plan concerning the Breton language through Ya d'ar brezhoneg on 16 December 2008.

Riec-sur-Bélon is twinned with:

This Finistère geographical article is a stub.