The NZR LA class was a class of steam locomotives used by the New Zealand Railways Department and the New Zealand Midland Railway Company. They were built by Nasmyth, Wilson and Company in 1887 for New Zealand Midland Railway Company, and were taken over by NZR in 1900, when the government acquired the incomplete Midland line. The designation also applies to the NZR rebuilds of the Avonside L class of 1875 which were later reclassified LB after being rebuilt as s.
