| Official Name: | Dizaj-e Tavil |
| Native Name: | ديزج طويل |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | West Azerbaijan |
| Subdivision Type2: | County |
| Subdivision Name2: | Showt |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Yowla Galdi |
| Population As Of: | 2006 |
| Population Total: | 410 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 39.3272°N 44.7997°W |
Dizaj-e Tavil (Persian: ديزج طويل, also Romanized as Dīzaj-e Ţavīl; also known as Dīzaj) is a village in Yowla Galdi Rural District, in the Central District of Showt County, West Azerbaijan Province, Iran. At the 2006 census, its population was 410, in 89 families.