Mali, officially the Republic of Mali, is a landlocked nation in Western Africa. It is the second largest country among West African nations. It borders Algeria on the north, Niger on the east, Burkina Faso and the Côte d'Ivoire on the south, Guinea on the south-west, and Senegal and Mauritania on the west.

Its straight borders on the north stretch into the centre of the Sahara desert, while the country's south, where the majority of inhabitants live, features the Niger and Senegal rivers. Formerly French Sudan, the country is named after the Empire of Mali. The name of the country comes from the Bambara word for hippopotamus and the animal appears on the Mali 5 franc coin.

At 478,734 mi² (1,240,000 km²[1]), Mali is the world's 24th-largest country (after Angola). It is comparable in size to South Africa, and is nearly twice the size of the US state of Texas.

Mali is landlocked and has a subtropical to arid climate. It is mostly flat, rising to rolling northern plains covered by sand, with savanna around the Niger River in the south. The hills of the Air Massif and Djado Plateau lie in the northeast.

Most of the country lies in the Sahara Desert, which produces a hot, dust-laden harmattan haze common during dry seasons and leads to recurring droughts. The nation has considerable natural resources, with gold, uranium, phosphates, kaolinite, salt and limestone being most widely exploited.