Dugald Drummond (1 January 1840 – 8 November 1912) was a Scottish steam locomotive engineer.
He had a career with the North British Railway, LB&SCR, Caledonian Railway and London and South Western Railway.
He was the brother of the engineer Peter Drummond.
He was a major locomotive designer and builder and many of his London and South Western Railway engines continued in main line service with the Southern Railway to enter British Railways service in 1947.