Koba is a sub-district in the Indonesian province of Bangka-Belitung, Indonesia. Koba is located in the Central Bangka Regency on the islands of Bangka Belitong, Indonesia.
The majority of the people in Koba are Hakka Chinese and Malay. Majority of Chinese are Buddhism, Catholic and Protestant.
Koba has a tropical rainforest climate (Af) with heavy rainfall year-round.