The British Railways Standard Class 4 4-6-0 is a class of steam locomotives, 80 of which were built during the 1950s.

The class was introduced in 1951. They were designed for mixed traffic use on secondary routes where the otherwise ubiquitous BR Standard Class 5 and their predecessors, the Black Fives, would be too heavy. They were essentially a tender version of the standard 4 2-6-4T, with similar characteristics to the GWR Manor Class, but built to the universal loading gauge. They used the same running gear as the tank engine (with the leading bogie from the Standard Class 5), and substantially the same firebox, smokebox and boiler.

Six have been preserved.