| Official Name: | Selas-e Olya |
| Native Name: | ثلث عليا |
| Settlement Type: | Village |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Khuzestan |
| Subdivision Type2: | County |
| Subdivision Name2: | Mahshahr |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Jarahi |
| Population As Of: | 2006 |
| Population Total: | 57 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
Selas-e Olya (fa|ثلث عليا, also Romanized as S̱elas̱-e ‘Olyā) is a village in Jarahi Rural District, in the Central District of Mahshahr County, Khuzestan Province, Iran. At the 2006 census, its population was 57, in 10 families.