| Official Name: | Qalehchi-ye Pain |
| Native Name: | قلعه چي پائين |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Markazi |
| Subdivision Type2: | County |
| Subdivision Name2: | Shazand |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Zalian |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Nahr-e Mian |
| Population As Of: | 2006 |
| Population Total: | 166 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 33.9742°N 49.1278°W |
Qalehchi-ye Pain (Persian: قلعه چي پائين, also Romanized as Qal‘ehchī-ye Pā’īn; also known as Qalāchī-ye Soflá and Qal‘ehchī-ye Soflá) is a village in Nahr-e Mian Rural District, Zalian District, Shazand County, Markazi Province, Iran. At the 2006 census, its population was 166, in 45 families.