| Dionaba | |
| Settlement Type: | Commune and town |
| Pushpin Map: | Mauritania |
| Pushpin Label Position: | bottom |
| Pushpin Mapsize: | 300 |
| Pushpin Map Caption: | Location in Mauritania |
| Subdivision Type: | Country |
| Subdivision Name: |  Mauritania |
| Subdivision Type1: | Region |
| Subdivision Name1: | Brakna |
| Subdivision Type2: | Department |
| Subdivision Name2: | Magta-Lahjar |
| Leader Title: | Mayor |
| Leader Name: | Mohamed Ahid O/ Bouh Mohamed Bowba (PRDS) |
| Unit Pref: | Imperial |
| Area Total Km2: | 1,018 |
| Population As Of: | 2013 |
| Population Total: | 11,019 |
| Population Density Km2: | auto |
| Population Blank1 Title: | Ethnicities |
| Timezone: | GMT |
| Utc Offset: | +0 |
| Coordinates: | 16.0633°N -12.595°W |
| Native Name Lang: | ar |
Dionaba or Djonaba is a town and commune in the Brakna Region of southern Mauritania.[1]
In 2013, it had a population of 11,019.[2]