
The Ubangi River, also spelled Oubangui, is the largest right-bank tributary of the Congo River in the region of Central Africa. It begins at the confluence of the Mbomou and Uele Rivers and flows west, forming the border between Central African Republic (CAR) and Democratic Republic of the Congo. Subsequently, the Ubangi bends to the southwest and passes through Bangui, the capital of the CAR, after which it flows south – forming the border between Democratic Republic of the Congo and Republic of Congo. The Ubangi finally joins the Congo River at Liranga.

Prosper Philippe Augouard , C.S.Sp. was a French Catholic priest, missionary, and explorer of Africa.

Bangui is the capital and largest city of the Central African Republic. As of 2012 it had an estimated population of 734,350. It was established as a French outpost in 1889 and named after its location on the northern bank of the Ubangi River ; the Ubangi itself was named from the Bobangi word for the "rapids" located beside the settlement, which marked the end of navigable water north from Brazzaville. The majority of the population of the Central African Republic lives in the western parts of the country, in Bangui and the surrounding area.

Bétou is a town on the right bank of the Ubangi River in the Likouala Department, Republic of the Congo. Bétou is a "sous-prefecture" and has its own mayor. It is the border town with the Central African Republic (CAR), approximately 90 km (56 mi) from the border by road or 45 km (28 mi) by river. The town is linked to Bangui, the capital of CAR, by a relatively good road but suffers from very poor road access to the south of the Republic of Congo, with the vast majority of travelers arriving by river. The town has a disused air-strip.

Dongou is a city and seat of Dongou District in the Likouala Region of northeastern Republic of the Congo.

Gbadolite or Gbado-Lite is the capital of Nord-Ubangi Province in the Democratic Republic of the Congo. The town is located 12 kilometres (7.5 mi) south of the Ubangi River at the border to the Central African Republic and 1,150 kilometres (710 mi) northeast of the national capital Kinshasa. Gbadolite was the ancestral home and residence of Joseph-Désiré Mobutu, later self-styled as Mobutu Sese Seko where airport, colleges, malls, supermarkets and libraries were built by the President in a program of modernization.

Impfondo is a town in the northeastern Republic of the Congo with a population of around 41,000 people, lying on the Oubangui River. It is home to an airport and is linked by river barge to Brazzaville and to Bangui. It is the administrative centre of Impfondo District and the Likouala Region.

Mobaye is a settlement with a population of 7,176 in the Basse-Kotto prefecture of Central African Republic. It lies on the Ubangi River.

Mobayi-Mbongo, formerly known as Banzyville or Banzystad, is a town in Nord-Ubangi Province, in the northwestern part of the Democratic Republic of the Congo, on the Ubangi River. It lies opposite the Central African town of Mobaye. It is the administrative center of the territory of the same name. As of 2012 the estimated population was 5,640.