| Official Name: | Sir Gavanani |
| Native Name: | سيرگوناني |
| Settlement Type: | village |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Sistan and Baluchestan |
| Subdivision Type2: | County |
| Subdivision Name2: | Khash |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Irandegan |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Kahnuk |
| Population As Of: | 2006 |
| Population Total: | 83 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
Sir Gavanani (Persian: سيرگوناني, also Romanized as Sīr Gavanānī; also known as Sar Kavanānī) is a village in Kahnuk Rural District, Irandegan District, Khash County, Sistan and Baluchestan Province, Iran. At the 2006 census, its population was 83, in 20 families.