The Wyodak mine is a coal mine in Wyodak, Wyoming, United States, located about 6 miles (9.7 km) east of Gillette in the coal-rich Powder River Basin.

The mine ships its coal to the adjacent Wyodak power plant and to other customers via railroad.

The mine is operated by Wyodak Resources Development, a subsidiary of the Black Hills Corporation.

Silo capacity at the mine's rail loop, which can accommodate a single unit train, is 24,000 tons.

[5] It is believed that Wyodak is the oldest, continually operated surface coal mine in the United States.