| Kaptiau | |
| States: | Indonesia |
| Region: | Papua |
| Speakers: | 230 |
| Date: | 2006 |
| Ref: | e18 |
| Familycolor: | Austronesian |
| Fam2: | Malayo-Polynesian |
| Fam3: | Oceanic |
| Fam4: | Western Oceanic |
| Fam5: | North New Guinea |
| Fam6: | Sarmi – Jayapura Bay |
| Fam7: | Sarmi |
| Iso3: | kbi |
| Glotto: | kapt1235 |
| Glottorefname: | Kaptiau |
Kaptiau (Kapitiauw) is an Austronesian language spoken on the eastern north coast of Papua province, Indonesia.