The Great Western Railway (GWR) 7200 Class is a class of 2-8-2T steam locomotive. They were the only 2-8-2Ts built and used by a British railway, and the largest tank engines to run on the Great Western Railway.

Originally the 4200 class and 5205 class 2-8-0T were introduced for short-haul Welsh coal traffic. Built specifically for the short runs of heavy trains in the South Wales Coalfield, Charles Collett took the agreed decision to rebuild some of them with an extended coal carrying capacity and thus greater range and usefulness by adding 4 feet to the frames, requiring the addition of a trailing wheel set, making them 2-8-2T.

The 54 rebuilt locos found work in most parts of the GWR system, where their great weight 94.1t was allowed, although the rebuilt chassis length did get them banned from certain goods yards.

54 were rebuilt, 3 have been preserved.