| Atreuco Department | |
| Native Name Lang: | es |
| Settlement Type: | Department |
| Mapsize: | 180px |
| Subdivision Type: | Country |
| Subdivision Name: |  Argentina |
| Subdivision Type1: | Province |
| Subdivision Name1: | La Pampa |
| Seat Type: | Capital |
| Seat: | Macachín |
| Unit Pref: | Metric |
| Timezone1: | ART |
Atreuco Department is a department of Argentina in La Pampa Province. The capital city of the department is Macachín.