Bugun, also known as Khowa, is a small possible language isolate spoken in Arunachal Pradesh state of India by the Bugun. They numbered about 1,700 in 2011.
Bugun is classified as a Kho-Bwa language in Blench & Post (2013), although Blench (2015) believes Bugun may actually be unrelated to the rest of the Kho-Bwa languages.
Lieberherr & Bodt (2017) list the following Bugun dialects along with their numbers of speakers.
Bugun is spoken in the following villages in southern West Kameng District, Arunachal Pradesh (Dondrup 1990:iv). The total population numbered 800 in 1981. Names in parentheses are spellings as given in Ethnologue.
Ethnologue also lists Mangopom village. These villages are located on the mountains on both sides of Rupa River.