| Kowan | |
| Also Known As: | Isumrud Strait |
| Familycolor: | Papuan |
| Fam1: | Northeast New Guinea? |
| Fam4: | Isumrud |
| Glotto: | kowa1247 |
| Glottorefname: | Kowan |
| Child2: | Korak |
The Kowan languages are a small family of languages spoken in the Adelbert Range area of Madang Province, Papua New Guinea, and first identified by Malcolm Ross.
The languages are Waskia, with 20,000 speakers, and Korak, with 500.