The Ungjin Commandery was an administrative division of the Chinese Tang dynasty that existed between 660 and 671 on the Korean Peninsula. It was created in place of Baekje in present-day Chungcheong Province after its defeat by a joint Silla-Tang alliance, but was destroyed only a few years after due to a counterattack by Silla and remnant Baekje forces. The Tang dynasty moved the now nonexistent Ungjin Commandery into the Protectorate General to Pacify the East. Those political organizations renamed the newly conquered areas under the Jimi system.