Langonnet
- Français: Langonnet
- Breton: Langoned
( Brezhoneg ) - Population: 1 757 hab
Gentilé: Langonnetais - Type: Commune
- Superficie: 85,40 km²
Densité: 20.57 hab/km²
- Latitude: 48°6'13" N
Longitude: 3°30'31" W
- Latitude: 48.103699
Longitude: -3.491861
- pages: 23
- Ce jour: ✝ Hermann Contract
