canton of Saint-Jean-Brévelay (canton de Saint-Jean-Brévelay)
- canton of France (until March 2015)
- Country:
- Capital: Saint-Jean-Brévelay
- Coordinates: 47° 52' 54" N, 2° 41' 9" E
- GPS tracks (wikiloc): [Link]
- Wikidata storage: Wikidata: Q1399441
- INSEE canton code: [5634]
Includes regions:


Saint-Jean-Brévelay
- commune in Morbihan, France
- Country:
- Postal Code: 56660
- Coordinates: 47° 50' 42" N, 2° 43' 20" E
- GPS tracks (wikiloc): [Link]
- Area: 41.83 sq km
- Population: 2770

Saint-Allouestre
- commune in Morbihan, France
- Country:
- Postal Code: 56500
- Coordinates: 47° 54' 35" N, 2° 43' 23" E
- GPS tracks (wikiloc): [Link]
- Area: 16.48 sq km
- Population: 614
- Web site: [Link]

Plumelec
- commune in Morbihan, France
- Country:
- Postal Code: 56420
- Coordinates: 47° 50' 16" N, 2° 38' 27" E
- GPS tracks (wikiloc): [Link]
- Area: 58.36 sq km
- Population: 2680
- Web site: [Link]

Buléon
- commune in Morbihan, France
- Country:
- Postal Code: 56420
- Coordinates: 47° 56' 6" N, 2° 40' 37" E
- GPS tracks (wikiloc): [Link]
- AboveSeaLevel: 117 м m
- Area: 12.27 sq km
- Population: 516


Billio
- commune in Morbihan, France
- Country:
- Postal Code: 56420
- Coordinates: 47° 52' 5" N, 2° 37' 58" E
- GPS tracks (wikiloc): [Link]
- Area: 12.03 sq km
- Population: 365

Bignan
- commune in Morbihan, France
- Country:
- Postal Code: 56500
- Coordinates: 47° 52' 45" N, 2° 46' 28" E
- GPS tracks (wikiloc): [Link]
- Area: 45.84 sq km
- Population: 2784
- Web site: [Link]


Guéhenno
- commune in Morbihan, France
- Country:
- Postal Code: 56420
- Coordinates: 47° 53' 32" N, 2° 38' 22" E
- GPS tracks (wikiloc): [Link]
- Area: 23.33 sq km
- Population: 793