Saguenay–Lac-Saint-Jean (French pronunciation: [saɡnɛ lak sɛ̃ ʒɑ̃], locally [saɡne lak sẽ ʒã]) is a region in Quebec, Canada on the Labrador Peninsula. It contains the Saguenay Fjord, the estuary of the Saguenay River, stretching through much of the region. It is also known as Sagamie in French, from the first part of "Saguenay" and the last part of "Piekouagami", the Innu name (meaning "flat lake") for Lac Saint-Jean, with the final "e" added to follow the model of other existing region names such as Mauricie, Témiscamie, Jamésie, and Matawinie. With a land area of 95,542.70 km (36,889.24 sq mi), Saguenay–Lac-Saint-Jean is the third-largest Quebec region after Nord-du-Québec and Côte-Nord. The region was created in 1966.
This region is bathed by two major watercourses, Lac Saint-Jean and the Saguenay River, both of which mark its landscape deeply and have been the main drives of its development in history. It is also irrigated by several other large watercourses. Bordered by forests and mountainous massifs, the southern portion of the region constitutes a fertile enclave in the Canadian Shield called the Saguenay Graben. Both the scenery and the cultural sites and activities of Saguenay–Lac-Saint-Jean attract tourists every year. Lac Saint-Jean is a popular vacation destination in the summer for residents of the more urban regions of Quebec.