The Central African Republic is a land-locked nation within the interior of the African continent. It is bordered by the countries of Cameroon, Chad, the Sudan, the Democratic Republic of the Congo and the Republic of the Congo. Much of the country consists of flat, or rolling plateau savanna, typically about 1,640 feet (500 m) above sea level. In the northeast are the Fertit Hills, and there are scattered hills in southwest part of the country. To the northwest is the Yade Massif, a granite plateau with an altitude of 3,750 feet (1,143 m).

At 240,519 mi² (622,984 km²), the Central African Republic is the world's 43rd-largest country (after Somalia). It is comparable in size to Ukraine, and is somewhat smaller than the US state of Texas.

Much of the southern border is formed by tributaries of the Congo River, with the Mbomou River in the east merging with the Uele River to form the Ubangi River. In the west, the Sangha River flows through part of the country. The eastern border lies along the edge of the Nile river watershed.

Estimates of the amount of the country covered by forest ranges up to 8%, with the densest parts in the south. The forest is highly diverse, and includes commercially important species of Ayous, Sapelli and Sipo. The deforestation rate is 0.4% per annum, and lumber poaching is commonplace.

The climate of the C.A.R. is generally tropical. The northern areas are subject to harmattan winds, which are hot, dry, and carry dust. The northern regions have been subject to desertification, and the northeast is desert. The remainder of the country is prone to flooding from nearby rivers