Rapid City, Pierre & Eastern Railroad is a Class II freight railroad operating across South Dakota and southern Minnesota in the northern plains of the United States. Portions of the railroad also extend into Wyoming and Nebraska. It is owned and operated by Genesee & Wyoming. The primary commodities shipped are grain, clay, and cement. Operations began on June 1, 2014.

The Dakota, Minnesota and Eastern Railroad is a wholly owned U.S. subsidiary of the Canadian Pacific Kansas City. Before its purchase, it was the largest Class II railroad in the United States, operating across South Dakota and southern Minnesota in the Northern Plains of the United States. Portions of the railroad also extended into Wyoming, Nebraska, Iowa, and Illinois. It interchanged with all seven U.S. Class I railroads.