- Language: Southern Muji
- Alternate names: Aga, Khlaka, Lahi, Muzi, Phula, Tjeki, Tshebu, Tshibu, Muji, Southern, Hlaka, Mujima
- Language code: ymc
- Language family: Sino-Tibetan, Tibeto-Burman, Ngwi-Burmese, Ngwi, Southeastern (SIL classification)
- Number of speakers: 26,000
- Vulnerability: Vulnerable
Officially classified within Yi nationality and are affiliated with the Phula ethnic group historically. Core Muji subgroup of Highland Phula. Traditional religion.
Southern Muji is spoken in China, East Asia.