| Mártires Department | |
| Official Name: | Departamento Mártires |
| Subdivision Type: | Country |
| Subdivision Name: | Argentina |
| Subdivision Type1: | Province |
| Subdivision Name1: | Chubut |
| Seat Type: | Capital |
| Seat: | Las Plumas |
| Established Title: | Founded |
| Established Date: | 1921 |
| Population As Of: | 2001 |
| Population Total: | 977 |
| Population Density Km2: | 0.1 |
| Postal Code Type: | Post Code |
| Postal Code: | U9101 |
| Coordinates: | -43.7167°N -82°W |
| Area Total Km2: | 15445 |
Mártires Department is a department of Chubut Province in Argentina.
The provincial subdivision has a population of about 977 inhabitants in an area of 15,445 km².