Gouesnou (French pronunciation: [ɡwenu]; Breton: Gouenoù) is a commune in the Finistère department of Brittany in north-western France.

Gouesnou is a satellite town of Brest.

Gouesnou is twinned with the town of Brecon in Powys, mid Wales, enabling cultural exchanges to take place between these two Celtic regions.

[3] The Penfeld River has its source in this commune.

In 2008, 8.32% of primary-school children attended bilingual schools, where Breton language is taught alongside French.