| Official Name: | Chahu |
| Native Name: | چاهو |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Hormozgan |
| Subdivision Type2: | County |
| Subdivision Name2: | Khamir |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Ruydar |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Rudbar |
| Population As Of: | 2006 |
| Population Total: | 38 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 27.4558°N 55.6347°W |
Chahu (Persian: چاهو, also Romanized as Chāhū) is a village in Rudbar Rural District, Ruydar District, Khamir County, Hormozgan Province, Iran. At the 2006 census, its population was 38, in 6 families.