| Grays Lake National Wildlife Refuge | |
|---|---|
IUCN category IV (habitat/species management area) | |
 | |
  Map of the United States | |
| Location | Bonneville County, Caribou County, Idaho, United States |
| Nearest city | Soda Springs, Idaho |
| Coordinates | 43°03′47″N 111°25′37″W / 43.06297°N 111.42689°W[1] |
| Area | 19,400 acres (79 km2) |
| Established | 1965 |
| Governing body | U.S. Fish and Wildlife Service |
| Website | Grays Lake National Wildlife Refuge |
Grays Lake National Wildlife Refuge is a National Wildlife Refuge of the United States located in southeastern Idaho. It has the largest hardstem bulrush marsh in North America. Located in a high mountain valley near Soda Springs, the refuge and surrounding mountains offer scenic vistas, wildflowers, and fall foliage displays. Lands adjacent to the 19,400-acre (79 km2) refuge are primarily wet meadows and grasslands. The refuge provides breeding habitat for species of mammals including moose, elk, mule deer, muskrat, badger, and weasel.