| Woi | |
| Region: | Papua, Indonesia |
| Speakers: | 1,800 |
| Date: | 2012 |
| Ref: | e18 |
| Familycolor: | Austronesian |
| Fam2: | Malayo-Polynesian |
| Fam3: | Central–Eastern Malayo-Polynesian |
| Fam4: | Eastern Malayo-Polynesian |
| Fam5: | South Halmahera–West New Guinea |
| Fam6: | Cenderawasih Bay |
| Fam7: | Yapen |
| Fam8: | Central–Western |
| Iso3: | wbw |
| Glotto: | woii1237 |
| Glottorefname: | Woi |
Woi (Wooi) is a Malayo-Polynesian language of Papua, Indonesia mainly spoken in the villages of Wooi and Woinap on Yapen Island and the village of Yenuari on Moisnum Island.