| Official Name: | Kerva |
| Native Name: | كروا |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Mazandaran |
| Subdivision Type2: | County |
| Subdivision Name2: | Qaem Shahr |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Nowkand Kola |
| Population As Of: | 2006 |
| Population Total: | 503 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 36.5067°N 52.8558°W |
Kerva (Persian: كروا, also Romanized as Kervā; also known as Bālā Gervā-ye ‘Olyā, Bālā Karvā, and Bālā Kervā) is a village in Nowkand Kola Rural District, in the Central District of Qaem Shahr County, Mazandaran Province, Iran. At the 2006 census, its population was 503, in 137 families.