Aztec (Navajo: Kinteel) is a city in San Juan County, New Mexico, United States. It is part of the Farmington, New Mexico Metropolitan Statistical Area. The population was 6,378 at the 2000 census. It is the county seat of San Juan County. The Aztec Ruins National Monument stands close to the city.
Aztec is located at 36°49′34″N 107°59′44″W / 36.82611°N 107.99556°W / 36.82611; -107.99556 (36.826046, -107.995595).
According to the United States Census Bureau, the city has a total area of 9.8 square miles (25.4 km²), of which, 9.7 square miles (25.2 km²) of it is land and 0.1 square miles (0.2 km²) of it (0.82%) is water.