The Songdowŏn Line is an electrified secondary railway line of the Korean State Railway in Wŏnsan Municipal City, North Korea, running from Segil on the Kangwŏn Line to Songdowŏn.

[1] It is not known when the line from Wŏnsan (actually, the line branches off from Segil) to Songdowŏn was opened, but the Songdowŏn−Segil section was opened on 23 September 2014, with a special ceremonial train marking the opening; this inaugural train was pulled by a Sŏngun Red Flag-class locomotive.

[1] Songdowŏn is the site of the Songdowon International Children's Camp, and there is a resort.

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