The Lake Sentarum National Park (Indonesian: Taman Nasional Danau Sentarum) is a national park protecting one of the world's most biodiverse lake systems,[2] located in the heart of Borneo Island, Kapuas Hulu Regency, West Kalimantan Province, Indonesia.

It lies in the upper Kapuas River tectonic basin some 700 kilometres upstream from the delta.

[3] The National Park is located in the western part of this basin, where three-quarters of the seasonal lakes occur.

[4] Danau Sentarum National Park has a rich fish fauna with around 240 recorded species, including the Asian arowana and clown loach botia.

The western part of the upper Kapuas floodplain is inhabited by almost 20,000 people, 88% of which are Malay fishermen.