The Kalenjin are a Southern Nilotic ethnic group native to East Africa, encompassing over 20 Kalenjin-speaking tribes and sub-groups sharing a common cultural and linguistic lineage. The primary tribes in Kenya, ordered by population, include the Kipsigis, Nandi, Pokot, Keiyo, Sabaot, Tugen, Marakwet, Arror, Lembus, Ogiek, and others. They represent Kenya's third-largest ethnic group, with a population of 6,358,113 per the 2019 census. The collective also includes the Endorois, Sengwer, Terik, Samor, Endo, and Senger, alongside Datooga clusters of Tanzania.