| Official Name: | San Martín de Montalbán, Spain |
| Subdivision Name3: | San Martín de Montalbán |
| Area Total Km2: | 135 |
| Elevation M: | 659 |
| Population Density Km2: | auto |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
San Martín de Montalbán is a municipality located in the province of Toledo, Castile-La Mancha, Spain. According to the 2006 census (INE), the municipality had a population of 748 inhabitants.