Saint-Pabu (French pronunciation: [sɛ̃ paby]; Breton: Sant-Pabu) is a commune in the Finistère department of Brittany in north-western France.

Inhabitants of Saint-Pabu are called in French Saint-Pabusiens.

The name Pabu comes from one of the names of Saint Tugdual.

The municipality launched a linguistic plan concerning the Breton language through Ya d'ar brezhoneg on 14 January 2006.

This Finistère geographical article is a stub.