| Bermejo Department | |
| Native Name Lang: | es |
| Settlement Type: | Department |
| Mapsize: | 180px |
| Pushpin Map Caption: | Location of Almirante Brown Department in Argentina |
| Coordinates: | -27.05°N -101°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Argentina |
| Subdivision Type1: | Province |
| Subdivision Name1: | Chaco Province |
| Seat Type: | Head town |
| Seat: | La Leonesa |
| Unit Pref: | Metric |
| Area Total Km2: | 2,562 |
| Population Total: | 24,215 |
| Population Density Km2: | auto |
| Population Demonym: | bermejense |
| Timezone1: | ART |
| Utc Offset1: | -3 |
| Postal Code: | H3518 |
| Area Code: | 03722 |
Bermejo is the easternmost department of Chaco Province in Argentina.
The provincial subdivision has a population of about 24,000 inhabitants in an area of 2,562 km², and its capital city is La Leonesa, which is located around 100 km from the provincial capital.