The Maasai are a Nilotic ethnic group inhabiting northern, central and southern Kenya and northern Tanzania, near the African Great Lakes region. The Maasai speak the Maa language, a member of the Nilotic language family that is related to the Dinka, Kalenjin and Nuer languages. Except for some elders living in rural areas, most Maasai people speak the official languages of Kenya and Tanzania, Swahili and English.

The Nilotic peoples are people indigenous to the Nile Valley who speak Nilotic languages. They inhabit South Sudan, Sudan, Ethiopia, Uganda, Kenya, the eastern border area of Democratic Republic of the Congo, Rwanda, Burundi and Tanzania. Among these are the Burun-speaking peoples, Teso people also known as Iteso or people of Teso, Karo peoples, Luo peoples, Ateker peoples, Kalenjin peoples, Karamojong people also known as the Karamojong or Karimojong, Datooga, Dinka, Nuer, Atwot, Lotuko, and the Maa-speaking peoples.