Saint-Yvi (French pronunciation: [sɛ̃.t‿ivi]; before September 2005: Saint-Yvy,[3] Breton: Sant-Ivi) is a commune in the Finistère department of Brittany in north-western France.

[4] Inhabitants of Saint-Yvi are called in French Saint-Yviens.

Saint-Yvi is located 13 km (8.1 mi) east of Quimper.

The river Jet forms its northern border.

This Finistère geographical article is a stub.