| Official Name: | Berlanga de Duero |
| Settlement Type: | Municipality |
| Pushpin Map: | Spain Castile and León#Spain |
| Pushpin Map Caption: | Location in Spain |
| Subdivision Type: | Country |
| Subdivision Type1: | Autonomous community |
| Subdivision Name3: | Comunidad de villa y tierra de Berlanga |
| Area Total Km2: | 220.18 |
| Elevation M: | 936 |
| Population Density Km2: | auto |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
Berlanga de Duero is a municipality located in the province of Soria, in the autonomous region of Castile and León, Spain. According to the 2017 census (conducted by the INE), the municipality has a population of 902 inhabitants.
Berlanga de Duero sits at 934m (3,064feet) above sea level in the northeastern foothills of the Ayllón mountain range. It has a continental Mediterranean climate, with long, cool winters—due in part to its altitude. The town is bisected by the Douro river, from which it derives part of its name, as well as the Douro's tributaries, the Escalote and Talegones.