The London and North Western Railway (LNWR) Webb Coal Tank is a class of 0-6-2T steam locomotive. They were called "Coal Tanks" because they were a side tank version of Webb's standard LNWR 17in Coal Engine, an 0-6-0 tender engine for slow freight trains. The design was introduced in 1881 by F.W. Webb and had the same cheaply produced cast iron wheels and H-section spokes as the tender engines. A trailing radial axle supporting the bunker was added also with two similarly cast-iron wheels.

Three hundred were built between 1881 and 1897. One Coal Tank number BR 58926, ex-LMS 7799, originally LNWR 1054, the 250th one built, has survived in preservation. The locomotive is owned by the National Trust and is maintained and run by the Bahamas Locomotive Society