The Bantu Languages Community is the largest language family represented in the Kenyan Languages Archive. Bantu languages belong to the vast Niger-Congo phylum and are spoken by the majority of Kenya's population, from the central highlands to the coastal strip and lake region. This community houses documentary and archival materials for all Bantu languages indigenous to Kenya, organised by individual language sub-community and, within each, by dialect collection.

Bantu languages in Kenya are characterised by a noun-class system, agglutinative morphology, and a rich oral literary tradition spanning epic narratives, riddles, proverbs, and song. Several Bantu languages — including Kiswahili, Gikuyu, and Kikamba — have substantial written traditions and standardised orthographies, while others such as Rabai and Kauma of the Mijikenda cluster are critically endangered with very few remaining speakers.