| Regions of Mauritania | |
| Category: | Region |
| Territory: |  Mauritania |
| Population Range: | 19,639–430,668 |
| Current Number: | 15 |
| Number Date: | 2023 |
Mauritania is divided into 15 regions :
| Map key | Name | Native name | Capital | Area | Population |
|---|---|---|---|---|---|
| 1 | Arabic: أدرار | Atar | 235000km2 | 62,658 | |
| 2 | Arabic: لعصابة | Kiffa | 36600km2 | 325,897 | |
| 3 | Arabic: لبراكنة | Aleg | 33000km2 | 312,277 | |
| 4 | Dakhlet Nouadhibou | Arabic: داخلة نواذيبو | Nouadhibou | 23090km2 | 123,779 |
| 5 | Gorgol | Arabic: كوركول | Kaédi | 13600km2 | 335,917 |
| 6 | Arabic: غيديماغا | Sélibaby | 10300km2 | 267,029 | |
| 7 | Arabic: الحوض الشرقي | Néma | 182700km2 | 430,668 | |
| 8 | Arabic: الحوض الغربي | Ayoun el Atrous | 53400km2 | 294,109 | |
| 9 | Arabic: إينشيري | Akjoujt | 46800km2 | 19,639 | |
| 10 | Nouakchott-Nord | Arabic: نواكشوط الشمالية | Dar-Naim | 306km2 | 366,912 |
| 10 | Nouakchott-Ouest | Arabic: نواكشوط الغربية | Tevragh-Zeina | 146km2 | 165,814 |
| 10 | Nouakchott-Sud | Arabic: نواكشوط الجنوبية | Arafat | 252km2 | 425,673 |
| 11 | Arabic: تكانت | Tidjikja | 98340km2 | 80,962 | |
| 12 | Arabic: تيرس زمور | Zouérat | 252900km2 | 53,261 | |
| 13 | Arabic: الترارزه | Rosso | 67800km2 | 272,773 | |
During the Mauritanian occupation of Western Sahara (1975–79), its portion of the territory (mainly corresponding to the lower half of Río de Oro province) was named Tiris al-Gharbiyya.[1]
The regions (wilaya) are subdivided into 44 departments; see departments of Mauritania for more information.