| Official Name: | Plaza Vieja (La Rioja) |
| Settlement Type: | Municipality and village |
| Pushpin Map: | Argentina |
| Pushpin Label Position: | bottom |
| Coordinates: | -28.9833°N -98°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Argentina |
| Subdivision Type2: | Department |
| Subdivision Name1: | La Rioja |
| Unit Pref: | Imperial |
| Timezone: | ART |
| Utc Offset: | -3 |
Plaza Vieja (La Rioja) is a municipality and village in La Rioja Province in northwestern Argentina.[1]