| Official Name: | Unistalda |
| Settlement Type: | Municipality |
| Pushpin Map: | Brazil |
| Pushpin Map Caption: | Location in Brazil |
| Coordinates: | -29.0472°N -55.1503°W |
| Subdivision Type: | Country |
| Subdivision Name: | Brazil |
| Subdivision Type1: | Region |
| Subdivision Name1: | South |
| Subdivision Type2: | State |
| Subdivision Name2: | Rio Grande do Sul |
| Subdivision Type3: | Mesoregion |
| Subdivision Name3: | Centro Ocidental Rio-Grandense |
| Subdivision Type4: | Microregion |
| Subdivision Name4: | Santiago |
| Subdivision Type5: | Metrop. region |
| Leader Title: | Mayor |
| Elevation M: | 361 |
| Area Total Km2: | 602.39 |
| Population Total: | 2,321 |
| Population As Of: | 2020 [1] |
| Population Density Km2: | auto |
| Timezone1: | BRT |
| Utc Offset1: | -3 |
| Postal Code Type: | Postal code |
| Postal Code: | 97755-xxx |
| Area Code Type: | Area code |
Unistalda is a municipality of the western part of the state of Rio Grande do Sul, Brazil. The population is 2,321 (2020 est.) in an area of 602.39 km².[2] Its elevation is 361 m. It is located west of the state capital of Porto Alegre and northeast of Alegrete.