Sumbwa (or Sisumbwa/Lusumbwa) is aBantu language spoken in northwestern Tanzania.

The language is mainly spoken inBukombe,Mbogwe andGeita districts (Geita Region); Kahama district (Shinyanga Region); Biharamulo district (Kagera Region) and Urambo district (Uyowa) –Tabora Region. Given the 2002 Census figures and population increases since then, the number of Sisumbwa speakers may be estimated as follows: Bukombe: 137,115; Kahama: 100,377; Geita: 79,490; Biharamulo: 4,306; Ilemela: 85; Kishapu: 110; Kwimba: 152; Misungwi: 103; Nzega: 358; Shinyanga (R): 2,260; Urambo: 36,755; This estimation gives 361,111 Sisumbwa speakers. These are the figures recorded in the Tanzania Language Atlas (2009:3), and this puts the language at no. 25 out of the 150 Tanzanian languages identified.

Sumbwa is still largely undescribed as there is an old grammar (Capus 1898), a trilingual dictionary (Kahigi 2008a) and description of some components of the morphology (Kahigi 2005; Kahigi 2008b).

• Capus, A. 1898. Grammaire de Shisumbwa. In: Zeitschrift fϋr Africanische und Oceanische Sprachen, IV, Berlin, pp. 1-123.
• Guthrie, M. 1948. The Classification of Bantu Languages. London: International African Institute.
• Kahigi, K. K. 2005. The Sisumbwa Noun: Its Classes and Derivation. In: Occasional Papers in Linguistics, 1. LOT, Univ. of Dar es Salaam. Pp. 117-154.
• Kahigi, K. K. 2008a. Sumbwa-English-Swahili/ English-Sumbwa-Swahili Dictionary. published by Language of Tanzania Project (LOT), UDSM.
• Kahigi, K. K. 2008b. Derivation in Sisumbwa. In: Occasional Papers in Linguistics, 3. LOT, Univ. of Dar es Salaam, pp. 53-81.
• Masele, Balla 2001. The Linguistic History of Sisumbwa, Kisukuma and Kinyamweezi in Bantu Zone F. Ph.D. Dissertation. St. John: Memorial University of Newfoundland.

• Great Lakes Bantu languages
• Languages of Tanzania

• Articles with short description
• Short description is different from Wikidata
• ISO language articles citing sources other than Ethnologue