| Official Name: | San Martín de Tábara, Spain |
| Subdivision Type3: | Comarca |
| Subdivision Name3: | Tierra de Tábara |
| Subdivision Type4: | Mancomunidad |
| Subdivision Name4: | Tierra de Tábara |
| Subdivision Name5: | Olmillos de Castro |
| Area Total Km2: | 28.52 |
| Elevation M: | 748 |
| Population As Of: | 2020 |
| Population Total: | 72 |
| Population Density Km2: | auto |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
San Martín de Tábara is a village located in the province of Zamora, Castile and León, Spain. According to the 2020 census (INE), the village had a population of 72 inhabitants.
It is one of the most historic towns in western Zamora, where an important San Martín monastery was located in the 10th century. In 1850, the town hall moved to Olmillos de Castro to save money.
Olmillos de Castro is home to the town hall of 4 villages: