Lomami National Park encompasses some 8,879 km2 (3,428 sq mi) of lowland tropical rainforest with some open-forest savanna islands to the south and more hilly terrain to the west.

It is home to several endangered species including the bonobo (Pan paniscus), the okapi (Okapia johnstoni) and the Congo peafowl (Afropava congensis).

The Lomami River forms the western border at the southern limit of the park and flows through the center of its northern part.

[4] The grey parrot (Psittacus erithacus) and the Congo peafowl (Afropava congolensis) inhabit the forests throughout Lomami National Park.

[citation needed] Lomami National Park also harbours the following species:[citation needed] The people living in the buffer zone of the Lomami National Park belong primarily to seven different ethnic groups: Lengola, Mbole, Mituku, Langa, Tetela, Ngengele and Arabisé.