Nicolet-Yamaska is a former provincial electoral district in the Centre-du-Québec and Montérégie regions of Quebec, Canada that elected members to the National Assembly of Quebec. As of its final election, it included the cities or municipalities of Pierreville, Nicolet, Bécancour, Sainte-Eulalie, Daveluyville, Saint-Leonard-d'Aston, Saint-Wenceslas and Saint-Gerard-Majella as well as portions of the city of Drummondville.