Silfiac (French pronunciation: [silfjak]; Breton: Silieg) is a commune in the Morbihan department of Brittany in north-western France.
[3] The village centre of Silfiac is the highest in the department of Morbihan.
Silfiac is border by Séglien to the south, by Cléguérec and Sainte-Brigitte to the east, by Lescouët-Gouarec and Perret to the north and by Langoëlan to the west.
A six meters high standing stone called Quenouille du Diable (devil's distaff) rises in the town.
Their coats of arms are visible on the south wall of the Saint-Laurent chapel.