| Mazcuerras | |
| Settlement Type: | Municipality |
| Pushpin Map: | Spain |
| Pushpin Map Caption: | Location in Spain |
| Subdivision Type: | Country |
| Subdivision Name: |  Spain |
| Subdivision Type1: | Autonomous community |
| Subdivision Name1: | Cantabria |
| Subdivision Type2: | Province |
| Subdivision Name2: | Cantabria |
| Subdivision Type3: | Comarca |
| Subdivision Name3: | Saja-Nansa |
| Subdivision Type4: | Judicial district |
| Subdivision Name4: | Torrelavega |
| Coordinates: | 43.2986°N -4.2067°W |
| Elevation M: | 135 |
| Area Total Km2: | 55.65 |
| Population Density Km2: | auto |
| Blank Name Sec1: | Official language(s) |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Leader Title: | Mayor |
| Leader Name: | Celestino Fernández García |
Mazcuerras (pronounced as /es/) is a municipality in the autonomous community of Cantabria, Spain.