| Language | Population | Bloc | Family | Cluster | Band | |
|---|---|---|---|---|---|---|
| ● Rotokas | 8,600 | East Papuan | Bougainville | West Bougainville | Rotokas | |
| ● Rapoisi | 5,490 | East Papuan | Bougainville | West Bougainville | ||
| ● Askopan | 2,870 | East Papuan | Bougainville | West Bougainville | Rotokas | |
| ● Ramopa | 2,390 | East Papuan | Bougainville | West Bougainville |