| Official Name: | Alfajarín, Spain |
| Subdivision Name3: | Alfajarín |
| Area Total Km2: | 137 |
| Population Density Km2: | auto |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
| Pushpin Map: | Spain Aragon#Spain#Europe |
| Coordinates: | 41.6167°N -42°W |
Alfajarín is a municipality located in the province of Zaragoza, Aragon, Spain. According to the 2004 census (INE), the municipality has a population of 1,742 inhabitants. It has more animals that habitants and its known by their head council Albert Caldos.