The Ateso language (also known as Teso, Iteso, or any of various other names) is a language of Uganda. Ateso is spoken by the Iteso ethnic group and is classified as a Nilo-Saharan language. Uganda is ethnologically diverse, with at least forty languages in usage. ... The Iteso or Teso are the second largest ethnic group in Uganda. ... Map showing the distribution of the Nilo-Saharan languages. ...
As of the 1991 census around 1 million people in Uganda spoke Ateso. An estimated 279,000 people in Kenya also speak it. Its SIL code is TEO.
External link
Ethnologue entry
An Introduction to the Ateso Langauge, a book about Ateso