Las Heras is a city in the province of Mendoza, Argentina. It lies in the north of the metropolitan area of the provincial capital, also named Mendoza, and is the head town of the department of the same name.
According to the 2001 census conducted by INDEC, the national statistics institute, the city had more than 180,000 inhabitants. Its position within the Mendoza metropolitan area makes it part of the urban agglomeration centred on the provincial capital.