| Official Name: | Dayan |
| Native Name: | دايان |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | East Azerbaijan |
| Subdivision Type2: | County |
| Subdivision Name2: | Khoda Afarin |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Keyvan |
| Population As Of: | 2006 |
| Population Total: | 46 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 39.0967°N 47.0942°W |
Dayan (Persian: دايان, also Romanized as Dāyān) is a village in Keyvan Rural District, in the Central District of Khoda Afarin County, East Azerbaijan Province, Iran. According to 2006 census, its population was 46, in 10 families.