| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Rabeliya | city | Western | Sri Lanka | 6.66 | 80.22 | 830 | 30924 |
| Radamulla | city | Western | Sri Lanka | 6.53 | 79.98 | 13 | 126984 |
| Radawadunna | city | Western | Sri Lanka | 7.18 | 80.14 | 830 | 95716 |
| Radawana | city | Western | Sri Lanka | 7.03 | 80.09 | 396 | 182433 |
| Radawana North | city | Western | Sri Lanka | 7.04 | 80.09 | 390 | 177272 |
| Radawana South | city | Western | Sri Lanka | 7.03 | 80.09 | 396 | 182433 |
| Raddalgoda | city | Western | Sri Lanka | 7.20 | 80.10 | 830 | 99438 |
| Raddegoda | city | Western | Sri Lanka | 6.68 | 80.01 | 141 | 188260 |
| Raddolugama | city | Western | Sri Lanka | 7.14 | 79.90 | 36 | 222746 |
| Raddoluwa | city | Western | Sri Lanka | 7.13 | 79.90 | 36 | 236419 |
| Ragama | city | Western | Sri Lanka | 7.03 | 79.92 | 26 | 325802 |
| Ragama North | city | Western | Sri Lanka | 7.05 | 79.92 | 55 | 302421 |
| Raigam Tuduwa | city | Western | Sri Lanka | 6.71 | 80.01 | 137 | 117735 |
| Raigama | city | Western | Sri Lanka | 6.72 | 80.01 | 147 | 109706 |
| Rajagiriya | city | Western | Sri Lanka | 6.92 | 79.89 | 91 | 245942 |
| Rallagoda | city | Western | Sri Lanka | 6.76 | 80.09 | 830 | 157198 |
| Rambukkana | city | Western | Sri Lanka | 6.71 | 79.98 | 45 | 194826 |
| Rambutan | city | Western | Sri Lanka | 6.93 | 80.02 | 170 | 217786 |
| Ramminika | city | Western | Sri Lanka | 6.68 | 80.02 | 246 | 150656 |
| Ramminike | city | Western | Sri Lanka | 6.68 | 80.02 | 246 | 150656 |
| Rammukkana | city | Western | Sri Lanka | 6.71 | 79.98 | 45 | 194826 |
| Rammutugala | city | Western | Sri Lanka | 7.01 | 79.97 | 68 | 246506 |
| Ramukkana | city | Western | Sri Lanka | 6.71 | 79.98 | 45 | 194826 |
| Ranala | city | Western | Sri Lanka | 6.91 | 80.03 | 183 | 234852 |
| Ranale | city | Western | Sri Lanka | 6.91 | 80.03 | 183 | 234852 |
| Randeni Pallewela | city | Western | Sri Lanka | 7.20 | 80.08 | 347 | 99416 |
| Rangedara | city | Western | Sri Lanka | 6.53 | 80.17 | 830 | 53663 |
| Raniswala | city | Western | Sri Lanka | 7.12 | 80.04 | 164 | 155047 |
| Rannungala | city | Western | Sri Lanka | 6.62 | 79.97 | 22 | 162157 |
| Ranpokunagama | city | Western | Sri Lanka | 7.14 | 80.10 | 318 | 118166 |
| Ranpokunagama Model Village | city | Western | Sri Lanka | 7.14 | 80.12 | 360 | 113247 |
| Rassapana | city | Western | Sri Lanka | 7.24 | 80.05 | 183 | 84998 |
| Ratambale | city | Western | Sri Lanka | 7.07 | 80.14 | 830 | 100604 |
| Rathigoda | city | Western | Sri Lanka | 6.58 | 80.15 | 830 | 51412 |
| Rathmalgoda | city | Western | Sri Lanka | 6.75 | 80.12 | 830 | 114320 |
| Rathnagoda | city | Western | Sri Lanka | 6.67 | 80.08 | 177 | 77132 |
| Ratmalana | city | Western | Sri Lanka | 6.82 | 79.87 | 3 | 125229 |
| Ratmalana North | city | Western | Sri Lanka | 6.82 | 79.87 | 3 | 125229 |
| Ratmalana South | city | Western | Sri Lanka | 6.82 | 79.88 | 22 | 144873 |
| Ratmalawita | city | Western | Sri Lanka | 7.08 | 79.97 | 55 | 218401 |
| Ratmale | city | Western | Sri Lanka | 6.45 | 80.21 | 830 | 36619 |
| Ratmalgoda | city | Western | Sri Lanka | 6.75 | 80.12 | 830 | 114320 |
| Rattanapitiya | city | Western | Sri Lanka | 6.85 | 79.91 | 118 | 214787 |
| Ratugewatta | city | Western | Sri Lanka | 6.67 | 80.11 | 278 | 55614 |
| Rawatawatta | city | Western | Sri Lanka | 6.79 | 79.89 | 6 | 161444 |
| Rayigama | city | Western | Sri Lanka | 6.72 | 80.01 | 147 | 109706 |
| Remuna | city | Western | Sri Lanka | 6.68 | 80.07 | 295 | 82154 |
| Remunagoda | city | Western | Sri Lanka | 6.62 | 80.02 | 144 | 145395 |
| Rendapola Junction | city | Western | Sri Lanka | 6.55 | 80.02 | 249 | 131817 |
| Rerukana | city | Western | Sri Lanka | 6.74 | 80.00 | 147 | 124257 |
| Retiyala | city | Western | Sri Lanka | 6.63 | 80.13 | 262 | 44195 |
| Retiyala | city | Western | Sri Lanka | 6.66 | 80.11 | 232 | 50705 |
| Rilakotuwa | city | Western | Sri Lanka | 7.25 | 79.88 | 29 | 223873 |
| Rilaulla | city | Western | Sri Lanka | 7.06 | 79.89 | 19 | 330784 |
| Rilawela | city | Western | Sri Lanka | 6.79 | 79.98 | 203 | 208352 |
| Ritiketiya | city | Western | Sri Lanka | 6.43 | 80.07 | 213 | 72424 |
| Rividevigama | city | Western | Sri Lanka | 6.76 | 79.90 | 3 | 205946 |
| Rukgaha Totupola | city | Western | Sri Lanka | 6.73 | 79.97 | 19 | 214177 |
| Rukmale | city | Western | Sri Lanka | 6.86 | 79.97 | 275 | 217919 |
| Rukmalie | city | Western | Sri Lanka | 6.86 | 79.97 | 275 | 217919 |
| Runakanda | city | Western | Sri Lanka | 6.46 | 80.33 | 866 | 15944 |
| Rupavahini | city | Western | Sri Lanka | 6.90 | 79.87 | 39 | 141958 |
| Ruwanpura | city | Western | Sri Lanka | 7.08 | 80.11 | 380 | 166346 |