Regency seats of East Kalimantan

Tenggarong (), historically known as Tepian Pandan and Tangga Arung, is a riverside district and the regency seat of Kutai Kartanegara in the Indonesian province of East Kalimantan. The district is located on the bank of Mahakam River and covers an area of 358.34 km² after the administrative split with Tenggarong Seberang in 1996. It is the most populous district in Kutai Kartanegara, with a population of 106,480 in the 2020 census, and an estimated 112,937 in 2025.

district in Paser Regency, East Kalimantan Province, Indonesia

district in Berau Regency, East Kalimantan Province, Indonesia

Penajam (, formerly known as Balikpapan Seberang from 1969–1987), is a district and the administrative capital of Penajam North Paser Regency, in East Kalimantan, Indonesia. As of 2023, it was inhabited by 95,358 people, and currently has the total area of 1,207.37 km2. Its district seat is located at the village of Nipah-Nipah.