The Town of Antonito is a statutory town located in Conejos County, Colorado, United States. As of the 2000 census, the town's population was 873.
Antonito is located at 37°4′39″N 106°0′34″W / 37.0775°N 106.00944°W / 37.0775; -106.00944 (37.077490, -106.009489), along U.S. Highway 285.
According to the United States Census Bureau, the town has a total area of 0.4 square miles (1.0 km²), all of it land. Antonito is the eastern terminus of the Cumbres & Toltec Scenic Railroad, and the southern terminal of the San Luis and Rio Grande Railroad.