The London and North Western Railway (LNWR) Class A was a class of 0-8-0 steam locomotives.

From 1893 to 1900, Crewe Works built 111 of these engines, which had a three-cylinder compound arrangement, and were designed by Francis Webb.

[1] Like the other Webb compounds, they proved problematic, so in 1904 George Whale began rebuilding these to simple expansion engines.

Some of them, rebuilt to Class G2a, were still running in 1962.

[2] The LNWR letter classification system for 8 coupled engines (A, B, C, etc.)