| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| R. Biaus | city | Buenos Aires | Argentina | -35.09 | -59.92 | 134 | 568 |
| R. Báez | city | Buenos Aires | Argentina | -34.74 | -59.84 | 183 | 498 |
| R. Castillo | city | Buenos Aires | Argentina | -34.70 | -58.63 | 88 | 453530 |
| R. Gavina | city | Buenos Aires | Argentina | -37.44 | -60.04 | 830 | 151 |
| R. J. Neild | city | Buenos Aires | Argentina | -35.22 | -61.23 | 252 | 380 |
| R. Mejia | city | Buenos Aires | Argentina | -34.65 | -58.57 | 82 | 648476 |
| R. Obligado | city | Buenos Aires | Argentina | -34.36 | -60.78 | 209 | 460 |
| R. Payro | city | Buenos Aires | Argentina | -35.18 | -57.65 | 65 | 298 |
| R. Pérez | city | Buenos Aires | Argentina | -35.40 | -59.33 | 85 | 4521 |
| R. Santamarina | city | Buenos Aires | Argentina | -38.45 | -59.32 | 173 | 674 |
| R. de Escalada | city | Buenos Aires | Argentina | -34.72 | -58.38 | 32 | 820917 |
| Rafael Calzada | city | Buenos Aires | Argentina | -34.79 | -58.35 | 62 | 509855 |
| Rafael Castillo | city | Buenos Aires | Argentina | -34.70 | -58.63 | 88 | 453530 |
| Rafael Obligado | city | Buenos Aires | Argentina | -34.36 | -60.78 | 209 | 460 |
| Ramallo | city | Buenos Aires | Argentina | -33.48 | -60.01 | 72 | 9110 |
| Ramon Baez | city | Buenos Aires | Argentina | -34.74 | -59.84 | 183 | 498 |
| Ramon J. Neild | city | Buenos Aires | Argentina | -35.22 | -61.23 | 252 | 380 |
| Ramos Biaus | city | Buenos Aires | Argentina | -35.09 | -59.92 | 134 | 568 |
| Ramos Mejia | city | Buenos Aires | Argentina | -34.65 | -58.57 | 82 | 648476 |
| Ramos Otero | city | Buenos Aires | Argentina | -37.53 | -58.34 | 259 | 149 |
| Ramón Biaus | city | Buenos Aires | Argentina | -35.09 | -59.92 | 134 | 568 |
| Ramón Santamarina | city | Buenos Aires | Argentina | -38.45 | -59.32 | 173 | 674 |
| Rancagua | city | Buenos Aires | Argentina | -34.03 | -60.50 | 170 | 298 |
| Ranchos | city | Buenos Aires | Argentina | -35.52 | -58.32 | 75 | 3939 |
| Ranelagh | city | Buenos Aires | Argentina | -34.80 | -58.20 | 19 | 163097 |
| Rauch | city | Buenos Aires | Argentina | -36.77 | -59.09 | 301 | 7179 |
| Raulet | city | Buenos Aires | Argentina | -37.88 | -61.48 | 925 | 149 |
| Rawson | city | Buenos Aires | Argentina | -34.61 | -60.07 | 180 | 447 |
| Real Audiencia | city | Buenos Aires | Argentina | -36.17 | -58.59 | 82 | 7 |
| Recalde | city | Buenos Aires | Argentina | -36.65 | -61.08 | 380 | 285 |
| Remedios de Escalada | city | Buenos Aires | Argentina | -34.72 | -58.38 | 32 | 820917 |
| Remedios de Escalada de San Martín | city | Buenos Aires | Argentina | -34.72 | -58.38 | 32 | 820917 |
| Reserva | city | Buenos Aires | Argentina | -37.83 | -61.22 | 830 | 149 |
| Reta | city | Buenos Aires | Argentina | -38.83 | -60.37 | 55 | 298 |
| Ricardo Gaviña | city | Buenos Aires | Argentina | -37.44 | -60.04 | 830 | 151 |
| Rincon | city | Buenos Aires | Argentina | -35.78 | -57.42 | 13 | 145 |
| Rincon Viejo | city | Buenos Aires | Argentina | -36.85 | -62.07 | 374 | 149 |
| Rincon Walker | city | Buenos Aires | Argentina | -40.58 | -62.30 | 29 | 0 |
| Rincon de Walker | city | Buenos Aires | Argentina | -40.61 | -62.29 | 49 | 0 |
| Rincón Grande | city | Buenos Aires | Argentina | -36.37 | -56.88 | 42 | 344 |
| Rincón Walker | city | Buenos Aires | Argentina | -40.61 | -62.29 | 49 | 0 |
| Rincón de Ajó | city | Buenos Aires | Argentina | -36.36 | -56.97 | 29 | 438 |
| Rincón de Milberg | city | Buenos Aires | Argentina | -34.41 | -58.61 | 6 | 125929 |
| Rincón del Guanaco | city | Buenos Aires | Argentina | -40.63 | -62.40 | 26 | 0 |
| Ringuelet | city | Buenos Aires | Argentina | -34.89 | -57.99 | 29 | 98614 |
| Rio Tala | city | Buenos Aires | Argentina | -33.77 | -59.64 | 85 | 10949 |
| Rivadavia | city | Buenos Aires | Argentina | -35.47 | -62.95 | 334 | 4590 |
| Rivadavia | city | Buenos Aires | Argentina | -34.84 | -58.37 | 82 | 418910 |
| Rivadeo | city | Buenos Aires | Argentina | -38.15 | -63.05 | 830 | 149 |
| Rivas | city | Buenos Aires | Argentina | -34.61 | -59.75 | 167 | 460 |
| Rivera | city | Buenos Aires | Argentina | -37.16 | -63.24 | 393 | 4718 |
| Roberto Cano | city | Buenos Aires | Argentina | -34.09 | -60.67 | 173 | 385 |
| Roberto Payró | city | Buenos Aires | Argentina | -35.18 | -57.65 | 65 | 298 |
| Roberts | city | Buenos Aires | Argentina | -35.14 | -61.97 | 305 | 2758 |
| Rocha | city | Buenos Aires | Argentina | -37.15 | -60.98 | 830 | 267 |
| Rojas | city | Buenos Aires | Argentina | -34.20 | -60.73 | 187 | 11641 |
| Roman Baez | city | Buenos Aires | Argentina | -34.74 | -59.84 | 183 | 498 |
| Romero | city | Buenos Aires | Argentina | -34.95 | -58.05 | 91 | 126176 |
| Rondeau | city | Buenos Aires | Argentina | -38.24 | -63.12 | 830 | 149 |
| Roosevelt | city | Buenos Aires | Argentina | -35.85 | -63.29 | 272 | 149 |
| Roque Pérez | city | Buenos Aires | Argentina | -35.40 | -59.33 | 85 | 4521 |
| Rosa | city | Buenos Aires | Argentina | -34.42 | -58.87 | 52 | 70672 |
| Rosas | city | Buenos Aires | Argentina | -35.97 | -58.93 | 82 | 149 |
| Ruiz | city | Buenos Aires | Argentina | -34.44 | -59.26 | 108 | 642 |
| Río Luján | city | Buenos Aires | Argentina | -34.28 | -58.89 | 16 | 21285 |