| Nehan | |
| Also Known As: | Nissan |
| States: | Papua New Guinea |
| Region: | Nissan Island |
| Speakers: | 6,500 |
| Date: | 2003 |
| Ref: | e18 |
| Familycolor: | Austronesian |
| Fam3: | Oceanic |
| Fam4: | Western |
| Fam5: | Meso-Melanesian |
| Fam6: | Northwest Solomonic |
| Fam7: | Nehan–Bougainville |
| Iso3: | nsn |
| Glotto: | neha1247 |
| Glottorefname: | Nehan |
Nehan, also known as Nissan, is an Austronesian language of Nissan Island, north of Bougainville, Papua New Guinea.