The Sup'ung Line is an electrified railway line of the Korean State Railway in North P'yà Ângan Province, North Korea, running from Pup'ung on the P'yà Ângbuk Line to Sup'ung.
The Sup'ung Line was opened along with the main line by the P'yà Ângbuk Railway on 27 September 1939 to assist with the construction of the Sup'ung Dam.
Following the partition of Korea, the line fell within the Soviet zone of occupation and was nationalised, along with all other railways in the zone, by the Provisional PeopleâÂÂs Committee for North Korea on 10 August 1946. It subsequently became part of the Korean State Railway. The electrification of the entire line was completed in 1980.
Sup'ung Station, the terminus of the line, is served by six pairs of commuter trains operating on the Ch'ongsuâÂÂSup'ungâÂÂP'ungnyà Ân route.
A yellow background in the "Distance" box indicates that section of the line is not electrified.