| Kayagar | |
| Nativename: | Wiyagar, Kaigar |
| States: | Indonesia |
| Region: | South Papua |
| Speakers: | 10,000 |
| Date: | 1993 |
| Ref: | e18 |
| Familycolor: | Papuan |
| Fam1: | Trans–New Guinea |
| Fam2: | Kayagar |
| Iso3: | kyt |
| Glotto: | kaya1328 |
| Glottorefname: | Kayagar |
Kayagar (Kajagar, Kaygi, Kaygir, Wiyagar) is a Papuan language spoken in South Papua. Wiyagar is spoken in Sigare Village, Kaitok Village and Yame Village in Assue District, Mappi Regency, While Kaigar is spoken in Amagais Village, Der Koumur District, Asmat Regency.