The Battle of Seonghwan () was the first major land battle of the First Sino-Japanese War. It took place on 29 July 1894 at Seonghwan, outside of Cheonan, Chungcheongnam-do Korea between the forces of Meiji Japan and Qing China. It is sometimes also referred to as the Battle of Asan (Japanese: 牙山作戦 ).