Sri Lanka Railways S13 is a class of Diesel-Electric Multiple Unit (DEMU) train set built for Sri Lanka Railways by the Integral Coach Factory, Chennai and imported through RITES, an Indian Railways PSU on a line of credit extended by the Indian Government in 2011.

[1] Sri Lanka Railways ordered 6 modern state-of-the-art DEMU train sets in 2017.

The first train set of the order arrived in Sri Lanka in December 2018.

[5] Later in 2019, Sri Lanka Railways ordered another two fully Air-conditioned DEMU train sets designated as the Class S13A.

The first train set of the Class S13A arrived Sri Lanka in November 2021.