The Bear River is the largest tributary of the Great Salt Lake, draining a mountainous area and farming valleys northeast of the lake and southeast of the Snake River Plain. It flows through southwestern Wyoming, southeastern Idaho, and northern Utah, in the United States. Approximately long, it is the largest river in North America that does not ultimately reach the sea.

Bear River City is a city in Box Elder County, Utah, United States. The population was 853 at the 2010 census, an increase over the 2000 population of 750. The population was sufficient under Utah state law for Bear River to become a city near the end of 2000. Although current state law requires a minimum population of 1000 for cities, Bear River City remains a city.