Cheonan–Asan station (Korean: 천안아산역) is a ground-level train station located mostly in Asan, South Chungcheong Province, South Korea, although part of it lies in the neighboring city of Cheonan.

This station serves high-speed KTX trains that run from Seoul to either Busan or Mokpo.

The location of Cheonan–Asan was finalised on June 14, 1993, though construction did not begin until July 22, 1996.

The planned name of "Onyangoncheon" was changed to "Cheonan–Asan" on November 20, 2003, and the station building was completed on March 27 the following year.

[4][3] Cheonan–Asan station serves select KTX trains on the Gyeongbu High Speed Railway and Honam High Speed Railway lines.