Name of ethnic group: Si La (Cu De Xu, Kha Pe).
Population: 840 people (Year 1999).
Locality:LaiChauProvince.

Name of ethnic group: San Diu (San Deo, Trai, Trai Dat, and "Man Quan Coc" (Man in Shorts)).
Population: 126,237 people (Year 1999).
Locality: The San Diu live in the midlands of Quang Ninh, Hai Duong, Bac Giang, Bac Ninh, Vinh Phu, Thai Nguyen, and Tuyen Quang provinces.

Name of ethnic group: San Chay (Cao Lan, San Chi, Man Cao Lan, and Hon Ban).
Population: 147,315 people (Year 1999).
Locality: Concentrated in Tuyen Quang, Thai Nguyen, and Bac Giang provinces. Communities of San Chay are also found scattered in Quang Ninh, Yen Bai, Lang Son, and Vinh Phuc provinces.

Name of ethnic group: Ro Mam.
Population: 301 people (Year 1999).
Locality: The Ro Mam live in Le Village, Mo Rai Commune, Sa Thay District of Kon Tum Province.

Name of ethnic group: Ra Glai (Ra Glay, Krai, Orang Glai, No-Ana, and La Vang).
Population: 96,931 people (Year 1999).
Locality: Mainly in the southern regions of Khanh Hoa and Ninh Thuan provinces.

Name of ethnic group: Pu Peo (Ka Beo, Penti, and Lo Lo).
Population: 705 people (Year 1999).
Locality: Concentrated along the Sino-Vietnamese border in Dong Van, Yen Minh, and Meo Vac districts of Ha Giang Province.

Name of ethnic group: Phu La (Xa Pho, Bo Kho Pa, Mu Di Pa, Pho, Va Xo and La Dun Dang).
Population: 9,046 people (Year 1999).
Locality: Lai Chau, Son La, Lao Cai, and Ha Giang provinces. The largest settlements are in LaoCaiProvince.

Name of ethnic group: Pa Then (Pa Hung and Tong).
Population: 5,569 people (Year 1999).
Locality: Concentrated in communes of Ha Giang and Tuyen Quang provinces.