The Turkana are a Nilotic people native to the Turkana District in northwest Kenya, a semi-arid climate region bordering Lake Turkana in the east, Pokot, Rendille and Samburu to the south, Uganda to the west, and Sudan and Ethiopia to the north. They refer to their land as Turkan.

According to the 2009 Kenyan census, Turkana number 855,399, or 2.5% of the Kenyan population, making Turkana the third largest Nilotic ethnic group in Kenya, after the Kalenjin and the Luo, slightly more numerous than the Maasai, and the tenth largest ethnicity in all of Kenya. Although this figure was initially controversial and rejected as too large by Planning Minister Wycliffe Oparanya, a court ruling (Feb 7, 2012) by Justice Mohammed Warsame stated that the Kenyan government accepts the 2009 census figures for Turkana.

The language of the Turkana, an Eastern Nilotic language, is also called Turkana; their own name for it is ŋaTurkana or aŋajep a ŋaTurkana.

The Turkana people call themselves ŋiTurkana (The Turkana). The name means the people of Turkan. They are mainly semi-nomadic pastoralists.