| Official Name: | Tresjuncos, Spain |
| Subdivision Type: | Country |
| Subdivision Name: |  Spain |
| Subdivision Type1: | Autonomous community |
| Subdivision Type2: | Province |
| Subdivision Name2: | Cuenca |
| Pushpin Map: | Spain#Spain Castilla-La Mancha |
| Pushpin Relief: | 1 |
| Subdivision Name3: | Tresjuncos |
| Area Total Km2: | 69 |
| Population Density Km2: | auto |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
Tresjuncos is a municipality located in the province of Cuenca, Castile-La Mancha, Spain. According to the 2004 census (INE), the municipality has a population of 445 inhabitants.