The Ch'à Âlsan Line is a non-electrified standard-gauge freight-only secondary line of the Korean State Railway in North P'yà Ângan Province, North Korea, running from Tongrim on the P'yà Ângà Âi Line to Tongch'angri, where it serves the Sà Âhae Satellite Launching Station.
The Ch'à Âlsan Line was originally opened as the Tongch'à Ân Line by the Chosen Government Railway prior to 1937, running from Ch'aryà Ângwan (nowadays called Tongrim) on the Kyà Ângui Line to Tongch'à Ân (now called Ch'à Âlsan). To facilitate the construction of the Sà Âhae Satellite Launching Station, the line was extended around 2010 to the launch facility via Tongch'ang.
A yellow background in the "Distance" box indicates that section of the line is not electrified.