Washita National Wildlife Refuge, National wildlife refuge in Custer County, United States.

Washita National Wildlife Refuge is a protected area featuring wetlands, open grasslands, and river habitat along Foss Reservoir. The landscape includes diverse terrain that supports breeding and resting grounds for waterfowl and other wildlife throughout the year.

The refuge was established in 1961 to provide resting and feeding locations for migratory birds traveling across central North America. Its creation marked an effort to protect water-dependent species during their seasonal movements.

The Washita River crosses the refuge slowly through prairie and cropland before joining Foss Reservoir, and this meeting of river and lake is what draws geese and other waterfowl. Birdwatchers have recorded 270 species here, including occasional bald eagles and rare whooping cranes. The name comes from the Washita River itself.

The refuge lies 5 miles west of Butler, Oklahoma, on the shore of Foss Lake. Boating, hiking, fishing and birdwatching are allowed; hunting is limited to certain seasons and requires a special permit. Quarry includes deer, geese, sandhill cranes, quail and rabbits.

The Texas horned lizard, listed as endangered by the state of Oklahoma, lives among the refuge's rolling hills and creek bottomlands. Birders have recorded 270 species here, including occasional bald eagles and rare whooping cranes. The slow Washita River crosses prairie and cropland before entering Foss Reservoir.