Iraqw (/ɪˈrɑːkuː/) is a Cushitic language spoken in Tanzania in the Arusha and Manyara Regions. It is expanding in numbers as the Iraqw people absorb neighbouring ethnic groups. The language has many Datooga loanwords, especially in poetic language. The Gorowa language, to the south, shares numerous similarities and is sometimes considered a dialect.
The South Cushitic or Rift languages of Tanzania are a branch of the Cushitic languages. The most numerous is Iraqw, with 600,000 speakers. Scholars believe that these languages were spoken by Southern Cushitic agro-pastoralists from Ethiopia, who began migrating southward into the Great Rift Valley in the third millennium BC.
The Alagwa (Swahili: Waasi; Rangi: Vaasi; Iraqw: Alawa) are a Cushitic ethnic group mostly based in the Kondoa District (Alagwa: Ulàa) of the Dodoma Region in central Tanzania, an area well known for rock art. Smaller numbers of Alagwa reside in the Hanang district of the Manyara Region in Tanzania, as well. They speak the Alagwa language as a mother tongue, which belongs to the South Cushitic branch of the Afro-Asiatic family. In 2022, the Alagwa population was estimated to number 52,816 individuals, and Mous (2016) estimates the number of speakers to be slightly over 10,000.
Some of the Alagwa have mixed with communities of Gorowa, Sandawe, Datooga, and Rangi. Many Alagwa speak the Rangi language and the two groups have both influenced each other. Many of the Alagwa are Muslims, following from an extended period of interactions with Swahili traders in Kondoa in the 19th century.