The Aztec Ruins National Monument in northwestern New Mexico, United States, consists of preserved structures constructed by the Pueblo Indians.

The national monument lies on the western bank of the Animas River in Aztec, New Mexico, about 12 miles (19 km) northeast of Farmington.

Additional Puebloan structures can be found in Salmon Ruins and Heritage Park, 9.5 miles (15.3 km) south.

[5] The site was declared "Aztec Ruin National Monument" on January 24, 1923.

Abrams House in Aztec is listed on the National Register of Historic Places.