Taebaek Line is a single-track electrified railway mainline connecting Jecheon station to Baeksan station in South Korea. At its two ends, the Taebaek Line connects to the Jungang Line and Yeongdong Line. The line was originally two spur lines, which were built across difficult mountainous terrain in stages, before a connection was built. The line includes the steepest section of the South Korean network, a short parallel line that is operated as a second track on the section includes South Korea's longest spiral tunnel. The centerpiece of the last-built section west of Taebaek, is a tunnel that was the longest in South Korea at the time of its construction, and Chujeon Station at the eastern end of the tunnel is the highest altitude in South Korea at 855 m (2,805 ft). In passenger traffic, the line is served by cross-country passenger trains connecting the capital Seoul with Korea's east coast. In freight traffic, while coal transport declined, the line carries significant cement transport. In the winter, regular special trains take tourists along the scenic route.

Jeongseon (Jeongseon-gun) is a county in the province of Gangwon-do, South Korea. It is famous as the hometown of "Jeongseon Arirang," a traditional Korean folksong. It is also the hometown of actor Won Bin and footballer Seol Ki-hyeon.