Southern Nilotic languages in the context of "Eastern Nilotic languages"

Tanzania, officially the United Republic of Tanzania, is a country in East Africa within the African Great Lakes region. It is bordered by Uganda to the northwest; Kenya to the northeast; the Indian Ocean to the east; Mozambique and Malawi to the south; Zambia to the southwest; and Rwanda, Burundi, and the Democratic Republic of the Congo to the west. According to a 2024 estimate, Tanzania has a population of around 67.5 million, making it the most populous country located entirely south of the equator.

Many important hominid fossils have been found in Tanzania. In the Stone and Bronze Age, prehistoric migrations into Tanzania included Southern Cushitic speakers similar to modern day Iraqw people, who moved south from present-day Ethiopia; Eastern Cushitic people who moved into Tanzania from north of Lake Turkana about 2,000 and 4,000 years ago; and the Southern Nilotes, including the Datoog, who originated from the present-day South Sudan–Ethiopia border region between 2,900 and 2,400 years ago. These movements took place at about the same time as the settlement of the Mashariki Bantu from West Africa in the Lake Victoria and Lake Tanganyika areas. In the late 19th century, the mainland came under German rule as German East Africa. This was followed by British rule after World War I when it was governed as Tanganyika, with the Zanzibar Archipelago remaining a separate colonial jurisdiction. Following their gaining respective independence in 1961 and 1963, the two entities merged in 1964 to form the United Republic of Tanzania.

The Western Nilotic languages are one of the three primary branches of the Nilotic languages, along with the Eastern Nilotic languages and Southern Nilotic languages, themselves belonging to the Eastern Sudanic subfamily of Nilo-Saharan. The about 22 (SIL estimate) Western Nilotic languages are spoken in an area ranging from southwestern Ethiopia and South Sudan via northeastern Democratic Republic of the Congo and northern Uganda to southwestern Kenya (with one of the Luo languages extending into northern Tanzania).

The Kalenjin is a group of tribes indigenous to East Africa, residing mainly in what was formerly the Rift Valley Province in Kenya and the eastern slopes of Mount Elgon in Uganda. They number 6,358,113 individuals per the Kenyan 2019 census and an estimated 273,839 in Uganda according to the 2014 census mainly in Kapchorwa, Kween and Bukwo districts.

The Kalenjin have been divided into 12 culturally and linguistically related tribes: Kipsigis (1.9 million), Nandi (937,000), Pokots (778,000), Sebei (350,000), Keiyo (451,000), Tugen (197,556), Cherang'any 8,323, Marakwet (119,000), Ogiek (52,000), Terik (323,230), Lembus (71,600) and Sengwer (10,800). The Kalenjin speak the Kipsigis languages but can also be inclusive of Akie language in Tanzania and Pokot language spoken in Kenya; all being classified collectively as Kalenjin Language; while in combination with Datooga languages of Tanzania, this cluster is called Southern Nilotic languages. The Kalenjin language, along with the languages of the Datooga people of Tanzania, the Maasai, Luo, Turkana, Nuer, Dinka among others are classified as Nilotic languages.