The USRA 2-8-8-2 was a USRA standard class of steam locomotive designed under the control of the United States Railroad Administration, the nationalized railroad system in the United States during World War I.

These locomotives were of 2-8-8-2 wheel arrangement in the Whyte notation, or (1'D)'D1' in UIC classification.

A total of 106 locomotives were built to this plan for the USRA; postwar, it became a de facto standard design.

While the 2-8-8-2 had been built in the United States since 1909,[1] most development work had gone into making subsequent locomotives larger and heavier.

By using smaller cylinders and higher boiler pressure, the result was a locomotive capable of powerful performance, and a turn of speed higher than the 20 mph (32 km/h) maximum of the ‘traditional’ designs.