The Seogyeong Line (서경선 Seogyeongseon) is a commuter rail loop line in Seogyeong, East Asian Federation, operated by Federation Rail. It is one of the most important rail lines in the Seogyeong, connecting the center city along the Gyeongui Line with the inner suburbs in Seogyeong and South Pyongan Prefectures. It connects most of the major stations and urban districts in Seogyeong, including Hwanggumbol, Sunan, Mirim, and Chongin, and providing connections to other railway lines at more than half its stations.