States and territories disestablished in 1392

Goryeo (; ) was a Korean state founded in 918, during a time of national division called the Later Three Kingdoms period, that unified and ruled the Korean Peninsula until the establishment of Joseon in 1392. Goryeo achieved what has been called a "true national unification" by Korean historians as it not only unified the Later Three Kingdoms but also incorporated much of the ruling class of the northern kingdom of Balhae, who had origins in Goguryeo of the earlier Three Kingdoms of Korea. According to Korean historians, it was during the Goryeo period that the individual identities of Gogurye

set of six emperors (later recognized as pretenders) to the throne of Japan during the Nanboku-chō period (1336–1392)

set of four emperors (Emperor Go-Daigo and his line) whose claims to sovereignty during the Nanboku-chō period spanning from 1336 through 1392 were usurped by the Northern Court

Byzantine district (theme)

Silesian duchy (1274–1392)

East Slavic state in eastern Europe from 1341 to 1425

principality

The Usfurids () were an Arab dynasty that in 1253 gained control of Eastern Arabia, including the islands of Bahrain. They were a branch of Uqaylids who re-migrated to Arabia after the fall of their rule in Syria.