Montagnac-sur-Auvignon (French pronunciation: [mɔ̃taɲak syʁ oviɲɔ̃]; Occitan: Montanhac d'Auvinhon) is a commune in the Lot-et-Garonne department in south-western France.

The commune is about 17 km south west of Agen and a similar distance east of Barbaste.

This Lot-et-Garonne geographical article is a stub.

You can help Wikipedia by expanding it.