Vale of Neath Railway 0-6-0ST locomotives were 0-6-0 saddle tank steam locomotives for working the heavy goods traffic on the Vale of Neath Railway and its associated lines in Wales. The first of 13 broad gauge locomotives entered service in 1854 and the last was withdrawn in 1886. The remaining four were standard gauge locomotives.
The Vale of Neath Railway was amalgamated into the Great Western Railway on 1 February 1865. The broad gauge locomotives retained their old numbers, but the standard gauge ones were renumbered.
The first 0-6-0STs delivered to the Vale of Neath Railway came from the Vulcan Foundry in 1854. Built to the same design as the South Devon Railway Tornado class with 900-imperial-gallon (4,100 l; 1,100 US gal) water tanks. The last one was withdrawn in 1884.
A second batch of 0-6-0STs with longer 1,500-imperial-gallon (6,800 l; 1,800 US gal) tanks were delivered in 1856. They also had a shorter wheelbase, larger cylinders and different valve gear. They were altered to 0-6-0 tender locomotives after 1860 and were all withdrawn by 1875.