| Official Name: | Chaltasian |
| Native Name: | چال تاسيان |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Tehran |
| Subdivision Type2: | County |
| Subdivision Name2: | Pishva |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Asgariyeh |
| Population As Of: | 2006 |
| Population Total: | 444 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 35.34°N 51.6981°W |
| Elevation M: | 945 |
Chaltasian (Persian: چال تاسيان, also Romanized as Chāltāsīān, Chāltāsīyān, Chāltāsīyown, Chāltāsīyūn, and Chātāseyān) is a village in Asgariyeh Rural District, in the Central District of Pishva County, Tehran Province, Iran. At the 2006 census, its population was 444, in 108 families.