Luwuk is the capital of Banggai Regency, Central Sulawesi, Indonesia. Its area is 72.82 km<sup>2</sup> following boundary changes in 2012 and 2015. There used to be an oil industry in the region. At the 2020 census the town had a population of 34,849.
The universities in Luwuk are UNTIKA and UNISMUH. Syukuran Aminuddin Amir Airport serves the area.
Luwuk has 3 indigenous ethnic groups - , Balantak, and Banggai.
Luwuk has a tropical savanna climate (Aw) with little to moderate rainfall year-round. It is one of the driest places in Indonesia.