| Official Name: | Muga de Sayago, Spain |
| Subdivision Name3: | Muga de Sayago |
| Area Total Km2: | 36.42 |
| Elevation M: | 773 |
| Population Density Km2: | auto |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
Muga de Sayago is a municipality located in the province of Zamora, Castile and León, Spain. According to the 2004 census (INE), the municipality had a population of 472 inhabitants.