| Official Name: | Castromonte, Spain |
| Subdivision Name3: | Castromonte |
| Leader Title: | Major |
| Leader Name: | Helidoro de la Iglesia Bezos (Spanish People's Party) |
| Area Total Km2: | 87 |
| Population As Of: | 2023 |
| Population Total: | 331 |
| Population Density Km2: | auto |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
Castromonte is a municipality located in the province of Valladolid, Castile and León, Spain. According to the 2023 census (INE), the municipality has a population of 331 inhabitants[1] . Olympic sports shooter Domingo Rodríguez was born here.[2]