Robert Absalom Thom (14 June 1873 – 2 November 1955) was the final Locomotive, Carriage and Wagon Superintendent of the Lancashire, Derbyshire and East Coast Railway, and became a key figure in the locomotive departments of the company's successors, the Great Central Railway and the London & North Eastern Railway.
Thom was born at Aberdeen on 14 June 1873.
He attended Robert Gordon's College in Aberdeen, where he received a technical education.