Kualanamu Airport Railink Services (ARS) (Indonesian: KA Bandara Kualanamu) is an airport rail link service in Medan in North Sumatra, Indonesia. The rail link is built to cut travel time from Medan railway station to Kualanamu International Airport, as roads connecting the airport and Medan city center are frequently affected by traffic congestion. The Kualanamu ARS is the first airport rail link in Indonesia connecting passenger between the city centre and airport.