Wild Horse Reservoir is a man-made lake in Elko County, Nevada in the United States.

In 1969, a new concrete single-angle arch dam was constructed by the United States Bureau of Reclamation for the Bureau of Indian Affairs with a height of 87 feet (27 m) and a length of 458 feet (140 m) at its crest.

The dam and reservoir are owned and administered by the BIA, and leased to the nearby Duck Valley Indian Reservation (Sho-Pai).

Recreation on the lake includes fishing for trout, bass, catfish and perch.

Summers are warm to hot with brisk nights, and tend to be drier than other times of the year.