The London and North Eastern Railway (LNER) Class L1 was used for two different types of 2-6-4T steam locomotive at different times:
- GCR Class 1B, introduced 1914, designated LNER Class L1 in 1924 and reclassified L3 in 1945
- LNER Thompson Class L1, introduced 1945
This article includes a list of locomotives with the same or similar names. If an internal link for a specific locomotive led you here, you may wish to change the link to point directly to the intended locomotive article, if one exists.