- Language: Bulo Stieng
- Alternate names: Stieng, Xtieng, Xa-Dieng, Budíp, Rangah, Upper Stieng, Northern Stieng, Kajiang, Kediang, Rmang, Stieng, Bulo
- Language code: sti
- Language family: Austro-Asiatic, Mon-Khmer, Eastern Mon-Khmer, Bahnaric, South Bahnaric, Stieng-Chrau (SIL classification)
- Number of speakers:
- Vulnerability: Threatened
- Script: Latin script.
Part of the Xtiêng official ethnic community (85,436, 2009 census) which includes Budeh Stieng (See: [[Stieng, Budeh]]). Christian, traditional religion.
Bulo Stieng is spoken in Vietnam, Cambodia, Southeast Asia.