The Ateker-speaking communities include the Nyangatomo of Ethiopia; the Toposa, Bari, and Torit of South Sudan; the Iteso, Turkana, and Masai of Kenya; the Iteso, Karimojong, Jie, Dodoth, Kumam, Langi, and Kakwa of Uganda; and the Masai of Tanzania, plus other closely-knit groups spread across the greater East African region.

The Ateker festival, which is celebrated under the theme Celebrating Shared Heritage, Forging a Path Towards Peace, Prosperity, and Cultural Renaissance, will also feature members of Ateker Communities, including the Nyangatomo of Ethiopia, Topotha, Bari & Torit of South Sudan, Iteso, Turkana, and Masai of Kenya, Iteso, Karimojong, Jie, Dodoth, and Langi of Uganda, and the Masai of Tanzania.