The GCR Classes 9D, 9H and 9M (LNER Class J10) were a class of 124 0-6-0 Steam locomotives designed by Harry Pollitt for freight work on the Manchester, Sheffield and Lincolnshire Railway (MS&LR) later renamed Great Central Railway (GCR).

[1] The locomotives passed to the London and North Eastern Railway (LNER) in 1923.

The LNER classified them as J10 with sub-classes J10/1 to J10/6 because of detail differences.

In the 1950s, some of them were sent to work at sheds once belonged to the LMS, the L&YR, and the LNWR.

This article relating to steam locomotives operated in England is a stub.