The London and South Western Railway T9 class was a class of 66 4-4-0 steam locomotive designed for express passenger work by Dugald Drummond and introduced to services on the LSWR in 1899. One example has been preserved after British Railways ownership.

Intended for express passenger work in South-West England, 66 were eventually built and saw several improvements throughout their service careers. The class operated until 1963 when the last example,No 30120, was withdrawn. 30120 was preserved by the National Railway Museum, and is currently on long term loan to the Bodmin and Wenford Railway