| Official Name: | Owtanlu |
| Native Name: | اوتانلو |
| Settlement Type: | Village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Razavi Khorasan |
| Subdivision Type2: | County |
| Subdivision Name2: | Dargaz |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Takab |
| Population As Of: | 2006 |
| Population Total: | 249 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 37.4342°N 58.9708°W |
Owtanlu (Persian: اوتانلو, also Romanized as Owtānlū, Atanloo, Otānlū, and Ūtānlū; also known as Otalli, Otānlī, and Ūtalī) is a village in Takab Rural District, in the Central District of Dargaz County, Razavi Khorasan Province, Iran. At the 2006 census, its population was 249, in 75 families.