| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| Ramon Castillo | city | Provincia de San Juan | Dominican Republic | 18.8616667 | -71.5194444 | 1574 | 10805 |
| Ramón Castillo | city | Provincia de San Juan | Dominican Republic | 18.8616667 | -71.5194444 | 1574 | 10805 |
| Ranchito | city | Provincia de San Juan | Dominican Republic | 19 | -71.5 | 1660 | 10399 |
| Rancho Copey | city | Provincia de San Juan | Dominican Republic | 18.6833333 | -71.2 | 2375 | 10816 |
| Rancho Juan | city | Provincia de San Juan | Dominican Republic | 18.9219444 | -71.5802778 | 1197 | 9851 |
| Rancho Viejo | city | Provincia de San Juan | Dominican Republic | 18.75 | -71.5166667 | 2703 | 10128 |
| Rebo | city | Provincia de San Juan | Dominican Republic | 18.7333333 | -71.55 | 2467 | 8439 |
| Rincon | city | Provincia de San Juan | Dominican Republic | 18.75 | -71.1666667 | 1138 | 10812 |
| Rincon Aji | city | Provincia de San Juan | Dominican Republic | 18.75 | -71.1666667 | 1138 | 10812 |
| Rincon de Aji | city | Provincia de San Juan | Dominican Republic | 18.75 | -71.1666667 | 1138 | 10812 |
| Rincón | city | Provincia de San Juan | Dominican Republic | 18.75 | -71.1666667 | 1138 | 10812 |
| Rincón Ají | city | Provincia de San Juan | Dominican Republic | 18.75 | -71.1666667 | 1138 | 10812 |
| Rincón de Ají | city | Provincia de San Juan | Dominican Republic | 18.75 | -71.1666667 | 1138 | 10812 |
| Rio Arriba del Norte | city | Provincia de San Juan | Dominican Republic | 18.9833333 | -71.2833333 | 2588 | 10795 |
| Rio Arriba del Sur | city | Provincia de San Juan | Dominican Republic | 18.65 | -71.3333333 | 2234 | 11340 |
| Rodeo | city | Provincia de San Juan | Dominican Republic | 18.7833333 | -71.2666667 | 1414 | 10809 |
| Rosario | city | Provincia de San Juan | Dominican Republic | 18.75 | -71.2 | 1187 | 10812 |
| Río Arriba del Norte | city | Provincia de San Juan | Dominican Republic | 18.9833333 | -71.2833333 | 2588 | 10795 |
| Río Arriba del Sur | city | Provincia de San Juan | Dominican Republic | 18.65 | -71.3333333 | 2234 | 11340 |
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