The NZR WA class locomotives were a class of Tank locomotive built for use for New Zealand Railways (NZR). 11 were built in-house at the Addington Workshops and at Hillside Workshops. Four more were converted from old J class 2-6-0 locomotives. Three were fitted with brakes to assist descent on the Fell-operated Rewanui and Roa inclines on the South Island's West Coast Region. These were among the last in use.