The Posan Line is an electrified freight-only railway line of the Korean State Railway in South P'yà Ângan Province, North Korea from Kangsà  at the junction of the P'yà Ângnam and Taean Lines, to Posan.
The April 13 Ironworks at Posan produces pig iron, all of which is shipped to the Ch'à Âllima Steel Complex a short distance away at Kangsà Ân on the P'yà Ângnam Line, whilst using raw materials received from all over the western part of the country.
A yellow background in the "Distance" box indicates that section of the line is not electrified.