| Punan | |
| Nativename: | Bah-Biau |
| Region: | Borneo |
| States: | Indonesia, Malaysia, Brunei |
| Ethnicity: | Punan Bah |
| Speakers: | 6,000 |
| Date: | 2020 |
| Ref: | e25 |
| Familycolor: | Austronesian |
| Fam2: | Malayo-Polynesian |
| Fam4: | Central Sarawak |
| Fam5: | Punan–Müller-Schwaner |
| Fam6: | Punan |
| Iso3: | pna |
| Glotto: | puna1275 |
| Glottorefname: | Punan Bah-Biau |
Bah-Biau Punan is an Austronesian language spoken by the Punan Bah and Punan Biau people of Borneo in Indonesia, Malaysia and Brunei.