Sri Lanka Railways Class M8 is a class of Sri Lankan diesel-electric locomotive that was developed by Banaras Locomotive Works at Varanasi, India,[2] in 1996.

This class of locomotives was fitted with 2,800 hp (2,100 kW) V16 power units.

They were imported to use on Upcountry main line, but it was impossible to run them due to their wheel design[clarification needed] of HAHS bogie without equaliser beams.

M8A locomotives were built using 2,200 hp (1,600 kW) V12 power units.

Depot for the M8s is Diesel Electric Locomotive Shed at Maradana.