- Language: Chaudangsi
- Alternate names: Bangba Lo, Bangbani, Chanpa Lo, Chaudans Lo, Saukas, Shaukas, Tsaudangsi, Bangba Lwo, Sauka, Shauka
- Language code: cdn
- Language family: Sino-Tibetan, Tibeto-Burman, Western Tibeto-Burman, Bodish, West Himalayish, Almora (SIL classification)
- Number of speakers: <3,500
- Vulnerability: Endangered
- Script: Unwritten.
Ranglo or Rang often used as a cover term for Byangs, Chaudangs, Darmiya, and Rongpo. Hindu, traditional religion.
Endangered in India.