The Ceylon Government Railway C1 and C1A were a class of steam locomotives of the Garratt type built by Beyer, Peacock & Company, England for the Ceylon Government Railway (now Sri Lanka Railways).

It was originally designated as the GARRATT Class before the reclassification of 1937.

The C1A sub-class was converted to oil firing between 1950 and 1954.

[1] The original C1 Garratt did not survive into preservation, but two C1As, Numbers 346 and 347, did.

346 has been moved to the new National Railway Museum in Colombo as a part of the national collection.