Banana is a small seaport in the Kongo Central province of the Democratic Republic of the Congo on the Atlantic coast. The port is situated in Banana Creek, an inlet about 1 km wide on the north bank of the Congo River's mouth, separated from the ocean by a spit of land 3 km long and 100 to 400 m wide. The port is located on the creek side of the spit, which shelters it from the ocean. It is about 8 km south-east of Muanda to which it is connected by a paved road running along the coast.

The Congo River, formerly also known as the Zaire River, is the second-longest river in Africa, shorter only than the Nile, as well as the third-largest river in the world by discharge volume, following the Amazon and Ganges rivers. It is the world's deepest recorded river, with measured depths of around 220 m (720 ft). The Congo–Lualaba–Luvua–Luapula–Chambeshi River system has an overall length of 4,700 km (2,900 mi), which makes it the world's ninth-longest river. The Chambeshi is a tributary of the Lualaba River, and Lualaba is the name of the Congo River upstream of Boyoma Falls, extending for 1,800 km (1,100 mi).