The Koch'am T'an'gwang Line, or Koch'am Colliery Line, is an electrified long freight-only railway line of the Korean State Railway in North Hamgyà Âng Province, North Korea, from Myà Ângch'à Ân on the P'yà Ângra Line to Sinmyà Ângch'à Ân and the Myà Ângch'à Ân Coal Complex.
The line was originally opened around 1937 by the Chosen Government Railway.
A yellow background in the "Distance" box indicates that section of the line is not electrified.