Alwarthirunagar is an urban locality in Chennai, the capital city of Tamil Nadu, India. The word nagar refers to a settlement in sanskrit. The suburb was developed by the City Lando Corporation in the late 1960s. With the opening of schools and shopping centres, Alwarthirunagar emerged as a service centre in Chennai's west. Twenty acres of forestation in the area acts against pollution. The area is traversed by state road number 113.