|Region||Along the Ethiopia–South Sudan border|
|5,000 in Ethiopia (2007 census)|
The Opuo language, or Tʼapo, is a Nilo-Saharan language spoken by the Shita of Ethiopia and South Sudan. It is a member of the Koman languages, and has a lexical similarity of 24% with Komo. The language is also called Opo-Shita, Opo, Opuo, Cita, Ciita, Shita, Shiita, Ansita, Kina, and Kwina. The self-name for the language is Tʼapo. "Langa" is a derogatory term for its speakers used by the Anuak.
Ethiopian speakers live in five villages along the South Sudan border north of the Anuak and Nuer, and its South Sudanese in Upper Nile State, around Kigille and Maiwut; however, of the 286 speakers the 1994 Ethiopian Census records, 183 are in the Oromia Region (mostly in the Mirab Shewa Zone), 32 in the Southern Nations, Nationalities, and People's Region, and less than ten in either of the Regions closest to South Sudan.
- Opuuo at Ethnologue (18th ed., 2015)
- Hammarström, Harald; Forkel, Robert; Haspelmath, Martin, eds. (2017). "Opo". Glottolog 3.0. Jena, Germany: Max Planck Institute for the Science of Human History.
- "The 1994 Population and Housing Census of Ethiopia" Archived 2008-12-07 at the Wayback Machine (accessed 31 January 2009)
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