|Region||Assam, Arunachal Pradesh|
|72,653 (2011 census)|
Deori is a Sino-Tibetan language spoken by the Deori people of Assam and Arunachal Pradesh. Only one clan of the Deori tribe, the Dibongya, has retained the language, the others having shifted to Assamese, but among the Dibongya it is vigorous. It is related to the Bodo-Garo languages.