Saguenay is a city in the Saguenay–Lac-Saint-Jean region of Quebec, Canada, on the Saguenay River, about 200 kilometres (120 mi) north of Quebec City by overland route. It is about 126 kilometres (78 mi) upriver and northwest of Tadoussac, located at the confluence with the St. Lawrence River. This city was formed in 2002 by a merger and annexation of smaller jurisdictions, including Chicoutimi, founded by the French in 1676.

The city of Saguenay constitutes a territory equivalent to a regional county municipality (TE); its geographical code is 941. Together with the regional county municipality of Le Fjord-du-Saguenay, it forms the census division (CD) of Le Saguenay-et-son-Fjord (94). The mayor of Saguenay is Jean Tremblay, who served as mayor of Chicoutimi before the merger. Prior to its use as the name of the city, the term "the Saguenay" or (less commonly) "Saguenay Valley" had already been used for the whole Saguenay River region (see Saguenay–Lac-Saint-Jean). Saguenay is the seat of the judicial district of Chicoutimi.