15th-century disestablishments in Asia

Langkasuka was an ancient Malay Hindu-Buddhist kingdom located in the Malay Peninsula. Langkasuka is generally believed to have existed from the 2nd to 15th century, and to have been established by descendants of Ashoka the Great.

Alaiye () is the medieval Seljuq name for Alanya (on the southern coast of Turkey). It refers to the Turkish city-state in a specific period and the beylik (principality) which developed around there, at times under the Karamanid dynasty. After the 1242 Battle of Köse Dağ, the Seljuqs lost control of the city, and it became semi-autonomous.