| Seluwasan | |
| States: | Indonesia |
| Region: | Tanimbar Islands |
| Speakers: | 2,840 |
| Date: | 1980 |
| Ref: | e16 |
| Familycolor: | Austronesian |
| Fam2: | Malayo-Polynesian |
| Fam3: | Central–Eastern |
| Fam4: | Selaru |
| Iso3: | sws |
| Glotto: | selu1242 |
| Glottorefname: | Seluwasan |
| Dia1: | Makatian |
Seluwasan is an Austronesian language of Yamdena, in the Maluku Islands of Indonesia. It is not close to Selaru. The Makatian dialect is distinct.