| Sengseng | |
| Region: | southwest interior of West New Britain Province, Papua New Guinea |
| Date: | 2003 |
| Ref: | e18 |
| Familycolor: | Austronesian |
| Fam2: | Malayo-Polynesian |
| Fam3: | Oceanic |
| Fam4: | Western Oceanic |
| Fam5: | North New Guinea |
| Fam6: | Ngero–Vitiaz |
| Fam7: | Southwest New Britain |
| Fam8: | Arawe–Pasismanua |
| Fam9: | Pasismanua |
| Map2: | Lang Status 80-VU.svg |
| Iso3: | ssz |
| Glotto: | seng1281 |
| Glottorefname: | Sengseng |
Sengseng is an Austronesian language spoken by about 1750 individuals in the southwest interior of West New Britain Province, Papua New Guinea on the island of New Britain.