Lac-Juillet () is an unorganized territory in the Côte-Nord region of Quebec, Canada, part of Caniapiscau Regional County Municipality.
The eponymous Lake Juillet (<small></small>) is located in the eastern part of the territory and was named after Blaise Juillet Avignon, a companion of Adam Dollard des Ormeaux, who drowned on April 19, 1660, near Nuns' Island.