| Comandante Fernández Department | |
| Native Name Lang: | es |
| Settlement Type: | Department |
| Mapsize: | 180px |
| Pushpin Map Caption: | Location of Comandante Fernández Department in Argentina |
| Coordinates: | -26.8°N -87°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Argentina |
| Subdivision Type1: | Province |
| Subdivision Name1: | Chaco Province |
| Seat Type: | Head town |
| Seat: | Presidencia Roque Sáenz Peña |
| Unit Pref: | Metric |
| Area Total Km2: | 1,500 |
| Population Total: | 88,164 |
| Population Density Km2: | auto |
| Population Demonym: | Saenzpeñense |
| Timezone1: | ART |
| Utc Offset1: | -3 |
| Postal Code: | H3700 |
| Area Code: | 03732 |
Comandante Fernández Department is a central department of Chaco Province in Argentina.
The provincial subdivision has a population of about 88,000 inhabitants in an area of 1,500 km², and its capital city is Presidencia Roque Sáenz Peña, which is located around 1,120 km from the Capital federal.