The coastal line is a major railway line in Sri Lanka, running between Colombo Fort and Beliatta, via Galle and Matara. Operated by Sri Lanka Railways, the line includes some of the busiest rail services in the country. The line has been extended to Beliatta on 8 April 2019 and is proposed to be extended to Kataragama, via Hambantota. With a designed maximum speed of 100 km/h (62 mph) between Kalutara and Matara, and a maximum speed of 120 km/h (75 mph) between Matara and Beliatta, the line is one of the fastest in Sri Lanka.

Fort railway station is a major rail hub in Colombo, Sri Lanka. The station is served by Sri Lanka Railways, with many inter-city and commuter trains entering each day. Fort Station is the main rail gateway to central Colombo; it is the terminus of most intercity trains in the country.