| Official Name: | Riyakhun |
| Native Name: | رياخون |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Isfahan |
| Subdivision Type2: | County |
| Subdivision Name2: | Falavarjan |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Zazeran |
| Population As Of: | 2006 |
| Population Total: | 1,482 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 32.575°N 51.5156°W |
Riyakhun (Persian: رياخون, also Romanized as Rīyākhūn and Rīākhūn; also known as Rīākhān) is a village in Zazeran Rural District, in the Central District of Falavarjan County, Isfahan Province, Iran. At the 2006 census, its population was 1,482, in 379 families.