| Chacabuco Department | |
| Native Name Lang: | es |
| Settlement Type: | Department |
| Mapsize: | 180px |
| Pushpin Map Caption: | Location of Almirante Brown Department in Argentina |
| Coordinates: | -27.2167°N -73°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Argentina |
| Subdivision Type1: | Province |
| Subdivision Name1: | Chaco Province |
| Seat Type: | Head town |
| Unit Pref: | Metric |
| Area Total Km2: | 1,378 |
| Population Total: | 27,813 |
| Population Density Km2: | auto |
| Population Demonym: | charatense |
| Timezone1: | ART |
| Utc Offset1: | -3 |
| Postal Code: | H3730 |
| Area Code: | 03731 |
Chacabuco Department is a western department of Chaco Province in Argentina.
The provincial subdivision has a population of about 28,000 inhabitants in an area of 1378km², and its capital city is Charata, which is located around 1100km (700miles) from the Capital federal.