The London and North Western Railway (LNWR) Prince of Wales Tank Class was a Pacific tank engine version of the Prince of Wales Class 4-6-0 steam locomotive.

Bowen-Cooke's predecessor George Whale had built 50 related Precursor Tank Class 4-4-2 engines.

All passed onto LMS ownership on the 1923 grouping and were renumbered 6950–6996 with the power classification 4P.

Withdrawals started in 1935, their replacements being Class 4 2-6-4T designs by Fowler and Stanier.

This article relating to steam locomotives operated in the United Kingdom is a stub.