Montauban-de-Bretagne (French pronunciation: [mɔ̃tobɑ̃ də bʁətaɲ], literally Montauban of Brittany; Breton: Menezalban, Gallo: Montauban) is a commune in the Ille-et-Vilaine department in Brittany in northwestern France.

On 1 January 2019, the former commune Saint-M'Hervon was merged into Montauban-de-Bretagne.

[3] The writer Jean Sulivan (1913–1980) was born in Montauban.

[4] Inhabitants of Montauban-de-Bretagne are called Montalbanais in French.

Population data refer to the commune in its geography as of January 2023.