The Sinsŏng Line is an electrified railway line of the Korean State Railway in Tŏkch'ŏn-si, South P'yŏngan Province, North Korea, running from West Tŏkch'ŏn on the Sŏch'ang Line to Sinsŏng.

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