| Iyayu | |
| States: | Nigeria |
| Date: | 2000 |
| Ref: | e18 |
| Familycolor: | Niger-Congo |
| Fam2: | Atlantic–Congo |
| Fam3: | Volta–Niger |
| Fam5: | Edoid |
| Fam6: | Northwestern |
| Fam7: | Osse River |
| Iso3: | iya |
| Glotto: | iyay1238 |
| Glottorefname: | Iyayu |
Iyayu (Idoani) is an Edoid language of Ondo State, Nigeria.