North Kalimantan
Kutai is a Malayan language spoken by 300,000 to 500,000 people. It is the native language of Kutai people (Indonesian: "Suku Kutai", Kutai: "Urang Kutai"), the indigenous ethnic group which lives along the Mahakam River in Borneo, especially in North Kalimantan, Indonesia. They are the principal population in the regencies of West Kutai, Kutai Kartanegara, and East Kutai within North Kalimantan province.