The East Coast Rail Link (ECRL, Malay: Laluan Rel Pantai Timur) is an under-construction standard-gauge double-track rail project connecting Port Klang on the Straits of Malacca to Kota Bharu in northeast Peninsular Malaysia, linking the East Coast Economic Region states of Pahang, Terengganu, and Kelantan to one another and to the central region of the peninsula's west coast.

The project is set to carry both passengers and freight from the west coast of Malaysia to the east, and vice versa. Construction began in August 2017.

On 3 July 2018, Malaysia Rail Link Sdn Bhd (MRL) instructed China Communications Construction Company (CCCC) to suspend all work under the engineering, procurement, construction, and commissioning contract of ECRL. The suspension was lifted a few months later after the signing of a supplementary agreement between MRL and CCCC in April 2019 on a revised construction cost and realignment of the southern route of the rail link.

ECRL is realized by a semi-automatic Chinese technology that lays 1.5 km of tracks a day with an accuracy of 10 millimeters using GPS satellites.

The project provides for the double tracking and standard gauge railway line. The infrastructure includes spur lines, tunnels, bridges, viaducts, depots, stations and a signalling system.

According to the first realignment, the inter-city passenger trains will use 6 car-train sets for EMUs travelling at 160 km per hour, cutting travel time from Kota Bharu to Gombak and Port Klang to around four and six hours respectively. The freight (cargo) trains use electric locomotives running at 80 km per hour.

Meanwhile, for international freight service from China to Europe via Malaysia, the original alignment of ECRL is expected to help reduce the shipping time by as much as 30 hours.

The proposed alignment for Phase 1 of the railway features 22 stations running along a 600.3 km route. The new rail link is projected to connect passengers from Kota Bharu in Kelantan to ITT Gombak in Selangor in less than four hours.