Cibola National Wildlife Refuge, Wildlife refuge in Imperial County and La Paz County, United States.

Cibola National Wildlife Refuge covers 74.6 km2 of lower Colorado River floodplain in La Paz County, Arizona, and Imperial County, California, among desert ridges and washes. It holds both the historic river channel and a channelized section built in the late 1960s, plus backwaters where wildlife gathers in the Sonoran Desert's Yuma Desert portion.

The refuge was established in 1964 to restore wetlands and backwaters of the Colorado River following modifications made by federal water management agencies. Its creation addressed the need to protect natural habitats from ongoing river development and water management projects.

This location serves as a vital resting point along the Pacific Flyway migration route, drawing waterfowl that rely on these protected waters during their seasonal journeys. Visitors often see large flocks pausing to feed and rest on their way between their breeding and wintering grounds.

The refuge is accessible from Blythe, California and Yuma, Arizona and offers free entry for all visitors. A visitor center operates seasonally, so it helps to check conditions before planning your visit.

Cibola NWR is one of the last major stopovers on the Pacific Flyway, and over 250 bird species have been recorded there, among them sandhill cranes, snowy egrets and the endangered southwestern willow flycatcher. The refuge also maintains a desert pupfish population, one of only three left in Arizona.