4. Handuri Language
138 speakers
Hinduri language is a dialect of the Western Pahari, or Himachali languages that belong to the family of Indo-European group, and the speakers are mostly located in Himachal Pradesh region. The language with only 138 speakers in the world is quite endangered and very much likely to disappear in the next following decades. However, since the speakers are predominantly Christian believers, there is a Bible written in this language, which may be one of the ways to preserve it from becoming extinct.