The Tuà Ân Line is an electrified long freight-only railway line of the Korean State Railway in Tanch'à Ân, South Hamgyà Âng Province, North Korea, running between Omongri on the P'yà Ângra Line and Yà Âhaejin at the junction of the P'yà Ângra and Hambuk Lines. The line serves the large Tanch'à Ân Refinery and the Tanch'à Ân Magnesia Factory at Tuà Ân.
A yellow background in the "Distance" box indicates that section of the line is not electrified.