Umatilla National Wildlife Refuge, National wildlife refuge on Columbia River, United States.

The Umatilla National Wildlife Refuge lies on and around the Columbia River about 15 miles northwest of Hermiston, Oregon, covering 8,907 acres in Oregon and 14,876 acres in Washington. It is divided into six units: two in Oregon, three in Washington and one in the middle of the river. Its open water, sloughs, shallow marsh, seasonal wetlands, cropland, islands and shrub-steppe upland form the habitat mix.

The refuge was established in 1969 to offset habitat losses caused by construction of the John Day Dam. It was created as a direct response to the ecological impacts of this major infrastructure project.

The refuge's name comes from the Umatilla people, whose traditional lands include this stretch of the Columbia River. Birdwatchers and wildlife enthusiasts visit the six units to watch migrating waterfowl, bald eagles and colonial nesting birds; the refuge is a stop on the Pacific Flyway.

The refuge is open from sunrise to sunset, with certain areas subject to seasonal closures. Visitors should prepare for wet and open conditions and bring appropriate gear for wildlife viewing.

The refuge sits within the Pacific Flyway, a major migration route for thousands of wild geese and other waterfowl. This geographic position makes it a critical stopover point during winter months when birds travel from north to south.