Alamosa National Wildlife Refuge, National Wildlife Refuge in southern Colorado, United States.

Alamosa National Wildlife Refuge is a federally protected area along the Rio Grande in southern Colorado, made up of wetlands and river floodplains. It provides habitat for hundreds of bird species, including migratory birds, raptors, and waterfowl that depend on the mix of open water and riparian vegetation.

The refuge was established in 1962 by the United States Fish and Wildlife Service, with the goal of protecting migratory birds along their routes. Over the decades, management efforts have helped maintain the wetland habitats that make this stretch of the Rio Grande a key stop for wildlife.

The name comes from the city of Alamosa, the nearest town about 8 miles northwest; the refuge lies along the Rio Grande, not the Alamosa River. The site was established in 1962 chiefly as a haven for migratory birds, and water from the Rio Grande is supplemented by the Closed Basin Project.

The refuge lies along the east side of the Rio Grande, about 8 miles (13 km) southeast of Alamosa, mainly in southeastern Alamosa County. A visitor center and a two-mile roundtrip hiking trail serve those arriving on foot. The site is more wild and less intensively managed than the nearby Monte Vista refuge, so expect fewer facilities and rougher conditions.

The refuge sits on the edge of the San Luis Valley, one of the highest and driest high valleys in North America, which makes its wetlands a rare contrast in the surrounding landscape. This unusual position turns the area into a key stop for migratory birds that find no comparable water source nearby.