Saint-Tugdual (French pronunciation: [sɛ̃ tyɡdɥal]; Breton: Sant-Tudal) is a commune in the Morbihan department of Brittany in north-western France.

[3] Inhabitants of Saint-Tugdual are called in French Tugdualais.

Historically, the village belongs to Vannetais and Pays Pourlet.

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This Morbihan geographical article is a stub.