San Isidro de Lules, commonly known as Lules, is a settlement in Tucumán Province in northern Argentina. It is the seat of the department of the same name, Lules Department.
The town is located in the Tucumán region of northern Argentina, an area in the country's northwest. As the administrative seat of its department, Lules serves as the local government center for the surrounding area.
Lules is known colloquially by the shortened form of its name, while its full official name is San Isidro de Lules. It is one of the settlements that make up Tucumán Province, the smallest province of Argentina by area and one of its most densely populated.