| Language | Population | Bloc | Family | Cluster | Band | |
|---|---|---|---|---|---|---|
| ● Basap | 16,700 | Austronesian | Rejang-Sajau | |||
| ● Sajau Basap | 10,200 | Austronesian | Rejang-Sajau | |||
| ● Burusu | 5,030 | Austronesian | Rejang-Sajau | |||
| ● Penan, Bah-Biau | 1,150 | Austronesian | Rejang-Sajau | |||
| ● Punan Merap | 260 | Austronesian | Rejang-Sajau |