| Official Name: | Rahnich |
| Native Name: | رهنيچ |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | South Khorasan |
| Subdivision Type2: | County |
| Subdivision Name2: | Birjand |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Shakhenat |
| Population As Of: | 2006 |
| Population Total: | 133 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 33.25°N 59.5°W |
Rahnich (Persian: رهنيچ, also Romanized as Rahnīch; also known as Rahneshk and Rahnīeh) is a village in Shakhenat Rural District, in the Central District of Birjand County, South Khorasan Province, Iran. At the 2006 census, its population was 133, in 45 families.