Chambly is a provincial electoral district in the Montérégie region of Quebec, Canada. It includes the cities of Chambly and Saint-Basile-le-Grand. It was created for the 1867 election (and an electoral district of that name existed earlier in the Legislative Assembly of the Province of Canada and the Legislative Assembly of Lower Canada). In the change from the 2001 to the 2011 electoral map, it lost Saint-Bruno-de-Montarville to the newly created Montarville electoral district.