Salar de Aguas Calientes IV is a salt pan in Chile. It is adjacent to the Llullaillaco National Park and is within the Central Andean dry puna ecoregion. Its drainage basin area is 536 km2 (207 sq mi). The site is significant as a staging area for sandpiper species and other long-distance migratory birds. Three species of flamingos (Chilean flamingo, Andean flamingo and James's flamingo) can be found here.
