| Ushuaia Department | |
| Native Name Lang: | es |
| Settlement Type: | Department |
| Mapsize: | 180px |
| Pushpin Map Caption: | Location of Avellaneda Department within Tierra del Fuego Province |
| Coordinates: | -54.8161°N -68.3236°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Argentina |
| Subdivision Type1: | Province |
| Subdivision Name1: | Tierra del Fuego Province |
| Seat Type: | Head town |
| Seat: | Ushuaia |
| Unit Pref: | Metric |
| Area Footnotes: | [1] |
| Area Total Km2: | 9390 |
| Population Total: | 56956 |
| Population As Of: | 2010 |
| Population Density Km2: | auto |
| Timezone1: | ART |
| Utc Offset1: | -3 |
Ushuaia Department (es|Departamento Ushuaia) is a department of Argentina in Tierra del Fuego Province, Argentina. The capital city of the department is situated in Ushuaia.
Off the eastern end of the main island, separated by the Le Maire Strait, is Isla de los Estados (English: Staten Island, from the Dutch Stateneiland).