Yamaska (French pronunciation: [jamaska]) is a municipality in the Pierre-De Saurel Regional County Municipality, in the Montérégie region of Quebec.

The population as of the Canada 2011 Census was 1,644.

Population trend:[5] (+) Amalgamation of Parish of Saint-Michel-d'Yamaska and the Villages of Yamaska and Yamaska-Est.

Mother tongue language (2006)[6]