The P'yŏngyanghwajŏn Line, or P'yŏngyang Thermal Power Plant Line, is an electrified freight-only railway line of the Korean State Railway in Pot'onggang-guyŏk and P'yŏngch'ŏn-guyŏk, P'yŏngyang, North Korea, running from Pot'onggang on the P'yŏngnam Line to P'yŏngch'ŏn, with a branch to the P'yŏngyang Thermal Power Plant (P'yŏngyanghwajŏn), from which the line gets its name).

[1] The original line between Pot'onggang Station to P'yŏngch'ŏn via the P'yŏngyang Marshalling Yard was opened by the Chosen Government Railway on 21 March 1944.

[2] This was extended by the Korean State Railway in 1961, when construction of the P'yŏngyang Thermal Power Plant began.

The line serves a number of industries, notably the Taedonggang Battery Factory, the 26 March Electric Wire Factory, and the P'yŏngyang Thermal Power Plant in Saemaŭl-dong, P'yŏngch'ŏn-guyŏk,[3] the Pot'onggang Organic Fertiliser Factory in Chŏngpy'ŏng-dong, P'yŏngch'ŏn-guyŏk, adjacent to the marshalling yard,[3] and the Posok Korean Foreign Trade Company.

A yellow background in the "Distance" box indicates that section of the line is not electrified.