| Official Name: | چپ چپ |
| Native Name: | چپ چپ |
| Settlement Type: | زیباترین روستای استان زنجان مصیب باقری |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Zanjan |
| Subdivision Type2: | County |
| Subdivision Name2: | Zanjan |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Zanjanrud |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Zanjanrud-e Pain |
| Population As Of: | 2006 |
| Population Total: | 677 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 37.0128°N 47.9522°W |
Chap Chap (Persian: چپ چپ, also Romanized as Chepchep and Chop Chop) is a village in Zanjanrud-e Pain Rural District, Zanjanrud District, Zanjan County, Zanjan Province, Iran. At the 2006 census, its population was 677, in 143 families.