The LSWR 380 class was a class of 4-4-0 tender locomotives designed by William Adams for the London and South Western Railway and introduced about 1879.

They were built by Beyer, Peacock and Company and received LSWR numbers 380–391.

They were nicknamed "steam rollers" because of their small solid bogie wheels.

The design was developed from Adams' 46 class 4-4-0T, later rebuilt as 4-4-2T.

This article relating to steam locomotives operated in England is a stub.