| Adolfo Alsina Department | |
| Native Name Lang: | es |
| Settlement Type: | Department |
| Subdivision Type: | Country |
| Subdivision Name: |  Argentina |
| Subdivision Type1: | Province |
| Subdivision Name1: | Río Negro |
| Seat Type: | Capital |
| Seat: | Viedma |
| Unit Pref: | Metric |
| Population Total: | 64482 |
| Population Density Km2: | auto |
| Timezone1: | ART |
| Utc Offset1: | -3 |
| Population As Of: | 2022 |
| Area Total Km2: | 8813 |
Adolfo Alsina Department is a department of Río Negro Province, Argentina.[1] It is named in honor of the 2nd Vice President of Argentina, Adolfo Alsina.