Uganda ( /juːˈɡændə/ yew-gan-də or /juːˈɡɑːndə/ yew-gahn-də), officially the Republic of Uganda, is a landlocked country in East Africa. Uganda is also known as the "Pearl of Africa". It is bordered on the east by Kenya, on the north by South Sudan, on the west by the Democratic Republic of the Congo, on the southwest by Rwanda, and on the south by Tanzania. The southern part of the country includes a substantial portion of Lake Victoria, which is also bordered by Kenya and Tanzania.

Uganda takes its name from the Buganda kingdom, which encompassed a portion of the south of the country including the capital Kampala.

The people of Uganda were hunter-gatherers until 1,700 to 2,300 years ago, when Bantu-speaking populations migrated to the southern parts of the country. Uganda gained independence from Britain on 9 October 1962.

The official languages are English and Swahili, although multiple other languages are spoken in the country.

The Ugandans were hunter-gatherers until 1,700 to 2,300 years ago. Bantu-speaking populations, who were probably from central Africa, migrated to the southern parts of the country. These groups brought and developed ironworking skills and new ideas of social and political organization. The Empire of Kitara covered most of the great lakes area, from Lake Albert, Lake Tanganyika, Lake Victoria, to Lake Kyoga. Its leadership headquarters were mainly in what became Ankole, believed to have been run by the Bachwezi dynasty in the fourteenth and fifteenth centuries, who may have followed a semi-legendary dynasty known as the Batembuzi. Bunyoro-Kitara is claimed as the antecedent of later kingdoms; Buganda, Toro, Ankole and Busoga. The Nilotic Luo invasion is believed to have led the collapse of Chwezi empire. The twins Rukidi Mpuuga and Kato Kintu are believed to be the first kings of Bunyonro and Buganda after the Chwezi Empire collapsed, creating the Babiito and Bambejja Dynasty. Nilotic people including Luo and Ateker entered the area from the north, probably beginning about A.D. 120. They were cattle herders and subsistence farmers who settled mainly the northern and eastern parts of the country. Some Luo invaded the area of Bunyoro and assimilated with the Bantu there, establishing the Babiito dynasty of the current Omukama (ruler) of Bunyoro-Kitara. Luo migration continued until the 16th century, with some Luo settling amid Bantu people in Eastern Uganda, with others proceeding to the western shores of Lake Victoria in Kenya and Tanzania. The Ateker (Karimojong and Iteso) settled in the northeastern and eastern parts of the country, and some fused with the Luo in the area north of Lake Kyoga.

Arab traders moved inland from the Indian Ocean coast of East Africa in the 1830s. They were followed in the 1860s by British explorers searching for the source of the Nile. Protestant missionaries entered the country in 1877, followed by Catholic missionaries in 1879. The United Kingdom placed the area under the charter of the British East Africa Company in 1888, and ruled it as a protectorate from 1894.

As several other territories and chiefdoms were integrated, the final protectorate called Uganda took shape in 1914. From 1900 to 1920, a sleeping sickness epidemic killed more than 250,000 people, about two-thirds of the population in the affected lake-shore areas.

Uganda gained independence from Britain in 1962, maintaining its Commonwealth membership. The first post-independence election, held in 1962, was won by an alliance between the Uganda People's Congress (UPC) and Kabaka Yekka (KY). UPC and KY formed the first post-independence government with Milton Obote as executive Prime Minister, the Buganda Kabaka (King) Edward Muteesa II holding the largely ceremonial position of President and William Wilberforce Nadiope, the Kyabazinga (paramount chief) of Busoga, as Vice President.

In 1966, following a power struggle between the Obote-led government and King Muteesa, the UPC-dominated Parliament changed the constitution and removed the ceremonial president and vice president. In 1967, a new constitution proclaimed Uganda a republic and abolished the traditional kingdoms. Without first calling elections, Obote was declared the executive President.

After a military coup in 1971, Obote was deposed from power and the dictator Idi Amin seized control of the country. Amin ruled Uganda with the military for the next eight years and carried out mass killings within the country to maintain his rule. An estimated 300,000 Ugandans lost their lives at the hands of his regime. Aside from his brutalities, he forcibly removed the entrepreneurial South Asian minority from Uganda, which left the country's economy in ruins. Amin's atrocities were graphically accounted in the 1977 book, "A State of Blood," which was written by one of his former ministers after he fled the country.

Amin's reign was ended after the Uganda-Tanzania War in 1979 in which Tanzanian forces aided by Ugandan exiles invaded Uganda. This led to the return of Obote, who was deposed once more in 1985 by General Tito Okello. Okello ruled for six months until he was deposed after the so called "bush war" by the National Resistance Army (NRA) operating under the leadership of the current president, Yoweri Museveni, and various rebel groups, including the Federal Democratic Movement of Andrew Kayiira, and another belonging to John Nkwaanga.

Museveni has been in power since 1986. In the mid- to late 1990s, he was lauded by the West as part of a new generation of African leaders. His presidency has included involvement in the civil war in the Democratic Republic of Congo (DRC) and other conflicts in the Great Lakes region, as well as the civil war against the Lord's Resistance Army, which has been guilty of numerous crimes against humanity including child slavery and mass murder. Conflict in northern Uganda has killed thousands and displaced millions.

The country is located on the East African plateau, lying mostly between latitudes 4°N and 2°S (a small area is north of 4°), and longitudes 29° and 35°E. It averages about 1,100 metres (3,609 ft) above sea level, and this slopes very steadily downwards to the Sudanese Plain to the north. However, much of the south is poorly drained, while the centre is dominated by Lake Kyoga, which is also surrounded by extensive marshy areas. Uganda lies almost completely within the Nile basin. The Victoria Nile drains from the lake into Lake Kyoga and thence into Lake Albert on the Congolese border. It then runs northwards into South Sudan. One small area on the eastern edge of Uganda is drained by the Turkwel River, part of the internal drainage basin of Lake Turkana.

Lake Kyoga serves as a rough boundary between Bantu speakers in the south and Nilotic and Central Sudanic language speakers in the north. Despite the division between north and south in political affairs, this linguistic boundary actually runs roughly from northwest to southeast, near the course of the Nile. However, many Ugandans live among people who speak different languages, especially in rural areas. Some sources describe regional variation in terms of physical characteristics, clothing, bodily adornment, and mannerisms, but others claim that those differences are disappearing.

Although generally equatorial, the climate is not uniform as the altitude modifies the climate. Southern Uganda is wetter with rain generally spread throughout the year. At Entebbe on the northern shore of Lake Victoria, most rain falls from March to June and the November/December period. Further to the north a dry season gradually emerges; at Gulu about 120 km from the South Sudanese border, November to February is much drier than the rest of the year.

The northeastern Karamoja region has the driest climate and is prone to droughts in some years. Rwenzori in the southwest on the border with Congo (DRC) receives heavy rain all year round. The south of the country is heavily influenced by one of the world's biggest lakes, Lake Victoria, which contains many islands. It prevents temperatures from varying significantly and increases cloudiness and rainfall. Most important cities are located in the south, near Lake Victoria, including the capital Kampala and the nearby city of Entebbe.

Although landlocked, Uganda contains many large lakes, besides Lake Victoria and Lake Kyoga, there are Lake Albert, Lake Edward and the smaller Lake George.