| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Rachbé | city | Assaba | Mauritania | 15.37 | -11.09 | 830 | 303 |
| Rachid | city | Tagant | Mauritania | 18.79 | -11.68 | 889 | 0 |
| Rachide | city | Tagant | Mauritania | 18.79 | -11.68 | 889 | 0 |
| Rag el Khnafra | city | Mauritania | 18.65 | -12.65 | 830 | 4 | |
| Ragg Ould 'Ali Ould Barka | city | Adrar | Mauritania | 20.20 | -13.38 | 334 | 0 |
| Ragg Ould ’Ali Ould Barka | city | Adrar | Mauritania | 20.20 | -13.38 | 334 | 0 |
| Ragg el Khnafra | city | Mauritania | 18.65 | -12.65 | 830 | 4 | |
| Raichakh | city | Guidimaka | Mauritania | 15.87 | -11.70 | 413 | 596 |
| Raifera | city | Assaba | Mauritania | 15.45 | -11.20 | 830 | 305 |
| Rakna | city | Gorgol | Mauritania | 16.11 | -12.62 | 101 | 596 |
| Rallit | city | Adrar | Mauritania | 21.04 | -11.50 | 1669 | 0 |
| Ras Gaboun | city | Dakhlet Nouadhibou | Mauritania | 19.76 | -16.24 | 45 | 200 |
| Rebg el Habcha | city | Trarza | Mauritania | 18.47 | -14.85 | 91 | 0 |
| Regba | city | Trarza | Mauritania | 16.74 | -14.68 | 52 | 149 |
| Regbet Thila | city | Dakhlet Nouadhibou | Mauritania | 19.42 | -16.47 | 0 | 41 |
| Reguibat | city | Dakhlet Nouadhibou | Mauritania | 19.42 | -16.47 | 0 | 41 |
| Rene Gueneta | city | Brakna | Mauritania | 16.94 | -13.85 | 160 | 149 |
| Rerdemani | city | Mauritania | 17.17 | -9.60 | 830 | 149 | |
| Rgueïba | city | Dakhlet Nouadhibou | Mauritania | 19.42 | -16.47 | 0 | 41 |
| Rgueïba-Thila | city | Dakhlet Nouadhibou | Mauritania | 19.42 | -16.47 | 0 | 41 |
| Rgueïg el Abiod | city | Inchiri | Mauritania | 19.74 | -15.82 | 154 | 0 |
| Rgueïgât | city | Tagant | Mauritania | 19.56 | -8.49 | 1164 | 0 |
| Rhabra | city | Assaba | Mauritania | 16.64 | -12.67 | 226 | 447 |
| Rhaifara | city | Assaba | Mauritania | 15.45 | -11.20 | 830 | 305 |
| Rhallit | city | Adrar | Mauritania | 21.04 | -11.50 | 1669 | 0 |
| Rhouima | city | Tagant | Mauritania | 19.35 | -11.41 | 1115 | 0 |
| Rhourd Asra | city | Tagant | Mauritania | 18.89 | -9.66 | 1190 | 0 |
| Rhwata el Khadra | city | Mauritania | 16.83 | -7.03 | 1066 | 27 | |
| Rindiao | city | Gorgol | Mauritania | 16.14 | -13.58 | 39 | 1495 |
| Rinndiao | city | Gorgol | Mauritania | 16.14 | -13.58 | 39 | 1495 |
| Rkiz | city | Trarza | Mauritania | 16.91 | -15.32 | 68 | 596 |
| Rlais Sas | city | Hodh ech Chargui | Mauritania | 15.80 | -7.97 | 830 | 298 |
| Roco | city | Trarza | Mauritania | 16.51 | -15.80 | 150 | 15838 |
| Rosso | city | Trarza | Mauritania | 16.51 | -15.80 | 150 | 15838 |
| Rosso روصو | city | Trarza | Mauritania | 16.51 | -15.80 | 150 | 15838 |
| Roueïs Tifougâg | city | Mauritania | 20.06 | -13.07 | 830 | 0 | |
| Roufi Aoudi | city | Gorgol | Mauritania | 16.16 | -13.71 | 45 | 2000 |
| Rouhata el Khadra | city | Mauritania | 16.83 | -7.03 | 1066 | 27 | |
| Rouji Aoudi | city | Gorgol | Mauritania | 16.16 | -13.71 | 45 | 2000 |
| Roumda | city | Assaba | Mauritania | 15.53 | -11.35 | 830 | 414 |
| Roumdé | city | Assaba | Mauritania | 15.54 | -11.17 | 830 | 298 |
| Rusu | city | Trarza | Mauritania | 16.51 | -15.80 | 150 | 15838 |