The LNER Class B17, also known as "Sandringham" or "Footballer" class was a class of 4-6-0 steam locomotive designed by Nigel Gresley for hauling passenger services on the Great Eastern Main Line. Among enthusiasts, the class was referred to as "footballers" as several members were named after football clubs.

In total 73 were built. Ten B17s were rebuilt by Edward Thompson as 2-cylinder locomotives with a LNER 100A boiler, between 1945 and 1949, becoming the Class B2. No more were rebuilt because of the success of the Thompson's B1 class.

None of the class have survived into preservation but a few of the football clubs were presented with the nameplates after the locomotives were cut up.  An operational locomotive being developed by the B17 Steam Locomotive Trust will become the newest member of the class, 61673 Spirit of Sandringham.

The North British Locomotive Preservation Group were engaged in a project to build a non-operational LNER Class B17 4-6-0 replica, named after a football club, 61662 Manchester United. By May 2019, many parts of the locomotive were being fixed together for display at the groups Mizens Railway base. In time, they intended to develop the replica into an operational locomotive, but in November 2020 they announced that the project was being terminated, with re-usable components, including the original tender, being donated to the B17 Steam Locomotive Trust.