Kotawaringin Sultanate

Kotawaringin, or also spelled Kota Waringin, was a sultanate on the south coast of Borneo. It covered an area in what is now the western part of the Indonesian province of Central Kalimantan. Its capital was the historic town of Waringin (or "Kota Waringin Lama"), situated to the northwest of Pangkalan Bun and on the east bank of the Lamandau River. It then had a brief existence as an autonomous "native state" in the United States of Indonesia between 1949 and 1950, before being formally created as a separate Kotawaringin Regency within what was then the Province of South Kalimantan (from which the western part, then consisting of three regencies — the kabupaten of Barito, Kapuas, and Kotawaringin, was split off in 1957 to form the new Central Kalimantan province). However, on 26 June 1959, Kotawaringin Regency was divided into a West Kotawaringin Regency and East Kotawaringin Regency.