| Ajar | |
| Settlement Type: | Commune and town |
| Pushpin Label Position: | bottom |
| Pushpin Mapsize: | 300 |
| Pushpin Map Caption: | Location in Mauritania |
| Subdivision Type: | Country |
| Subdivision Name: |  Mauritania |
| Subdivision Type1: | Region |
| Subdivision Name1: | Guidimaka |
| Leader Title: | Mayor |
| Leader Name: | Sow Idrissa (UDP) |
| Unit Pref: | Imperial |
| Area Total Km2: | 671.8 |
| Population As Of: | 2013 census |
| Population Total: | 14,357 |
| Population Density Km2: | auto |
| Timezone: | GMT |
| Utc Offset: | +0 |
Ajar is a town and commune in the south-central Assaba region of Mauritania.[1]
In 2013, the city had a population of 14,357.[2]