Saint-Hyacinthe is a provincial electoral riding in the Montérégie region of Quebec, Canada. It notably includes the cities of Saint-Hyacinthe and Saint-Pie. 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 gained La Présentation from Verchères electoral district and Saint-Pie from Iberville electoral district.