| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Rainbow Home Court Mobile Home Park | city | Maine | United States | 44.83361 | -68.81833 | 150 | 21572 |
| Rand Landing | city | Maine | United States | 46.57833 | -68.68944 | 905 | 5 |
| Randolph | city | Maine | United States | 44.23028 | -69.76722 | 49 | 9584 |
| Rands | city | Maine | United States | 46.71944 | -68.03444 | 498 | 3964 |
| Rangeley | city | Maine | United States | 44.96639 | -70.64333 | 1538 | 406 |
| Rankins Mill | city | Maine | United States | 43.87917 | -70.77222 | 442 | 1289 |
| Ray Corner | city | Maine | United States | 44.51222 | -69.18278 | 508 | 1252 |
| Raymond | city | Maine | United States | 43.90139 | -70.47083 | 269 | 5252 |
| Rayville | city | Maine | United States | 44.10306 | -70.55417 | 718 | 2458 |
| Razorville | city | Maine | United States | 44.27639 | -69.3975 | 298 | 1701 |
| Reach | city | Maine | United States | 44.24917 | -68.62417 | 22 | 1068 |
| Readfield | city | Maine | United States | 44.38778 | -69.96722 | 255 | 2604 |
| Readfield Depot | city | Maine | United States | 44.37917 | -69.94028 | 328 | 2665 |
| Red Beach | city | Maine | United States | 45.12028 | -67.14722 | 88 | 1960 |
| Red Beach Landing | city | Maine | United States | 45.13222 | -67.69639 | 203 | 172 |
| Red Rock Corner | city | Maine | United States | 44.40556 | -68.34583 | 82 | 2710 |
| Redding | city | Maine | United States | 44.41111 | -70.51111 | 1020 | 1127 |
| Redington | city | Maine | United States | 44.98444 | -70.43583 | 1804 | 344 |
| Reed | city | Maine | United States | 45.72361 | -68.14278 | 498 | 70 |
| Reeds | city | Maine | United States | 44.88667 | -70.41083 | 974 | 290 |
| Remick Corners | city | Maine | United States | 43.10194 | -70.74361 | 13 | 24194 |
| Reynolds Corner | city | Maine | United States | 44.65972 | -69.36056 | 200 | 1278 |
| Rice Corner | city | Maine | United States | 44.92472 | -69.75194 | 449 | 1409 |
| Richmond | city | Maine | United States | 44.08722 | -69.79944 | 65 | 3895 |
| Richmond Corner | city | Maine | United States | 44.10333 | -69.89111 | 232 | 2921 |
| Richmond Mill | city | Maine | United States | 44.39083 | -70.06972 | 364 | 1996 |
| Richs Corner | city | Maine | United States | 44.45944 | -68.46667 | 39 | 1572 |
| Richtown | city | Maine | United States | 44.24722 | -68.37778 | 0 | 799 |
| Richville | city | Maine | United States | 43.78528 | -70.56611 | 295 | 4203 |
| Ridge | city | Maine | United States | 44.84083 | -67.01583 | 55 | 1794 |
| Ridlonville | city | Maine | United States | 44.55528 | -70.54 | 498 | 2168 |
| Rigby historical | city | Maine | United States | 43.60306 | -70.29222 | 49 | 39960 |
| Riley | city | Maine | United States | 44.505 | -70.24722 | 436 | 4045 |
| Ring Hill | city | Maine | United States | 44.13889 | -69.89639 | 200 | 3511 |
| Ripley | city | Maine | United States | 44.99111 | -69.37222 | 400 | 1893 |
| Ripley | city | Maine | United States | 44.52139 | -67.7975 | 0 | 460 |
| Rivers End | city | Maine | United States | 44.81056 | -67.64639 | 98 | 253 |
| Riverside | city | Maine | United States | 44.39806 | -69.71028 | 104 | 5478 |
| Riverton | city | Maine | United States | 43.69944 | -70.31667 | 68 | 70835 |
| Robbinston | city | Maine | United States | 45.07806 | -67.11 | 3 | 2239 |
| Roberts | city | Maine | United States | 46.78889 | -67.95861 | 675 | 3905 |
| Roberts Corner | city | Maine | United States | 43.69333 | -70.96167 | 790 | 1645 |
| Roberts Corner | city | Maine | United States | 43.615 | -70.52667 | 216 | 6421 |
| Robinhood | city | Maine | United States | 43.85306 | -69.7375 | 0 | 2119 |
| Robinson | city | Maine | United States | 46.47333 | -67.84083 | 400 | 922 |
| Robinson Corner | city | Maine | United States | 44.07583 | -70.11556 | 206 | 11960 |
| Robyville | city | Maine | United States | 44.94083 | -68.97 | 164 | 2348 |
| Rockland | city | Maine | United States | 44.10361 | -69.10944 | 3 | 9105 |
| Rockport | city | Maine | United States | 44.18444 | -69.07667 | 3 | 4240 |
| Rockville | city | Maine | United States | 44.15472 | -69.11694 | 157 | 9058 |
| Rockwood | city | Maine | United States | 45.67778 | -69.74139 | 1062 | 10 |
| Rollins Mill | city | Maine | United States | 45.05194 | -69.03028 | 288 | 1385 |
| Rollins Mills | city | Maine | United States | 44.72944 | -69.14611 | 301 | 1316 |
| Rome | city | Maine | United States | 44.585 | -69.86972 | 242 | 1122 |
| Rome Corner | city | Maine | United States | 44.57222 | -69.90389 | 452 | 1208 |
| Roque Bluffs | city | Maine | United States | 44.61278 | -67.48028 | 0 | 649 |
| Rosemary | city | Maine | United States | 43.15778 | -70.78972 | 45 | 15401 |
| Rosemont | city | Maine | United States | 43.67083 | -70.30139 | 62 | 70835 |
| Rosemont subdivision | city | Maine | United States | 43.66056 | -70.29306 | 29 | 75870 |
| Ross Corner | city | Maine | United States | 43.58556 | -70.80167 | 498 | 2469 |
| Round Mountain | city | Maine | United States | 45.26417 | -70.64 | 1788 | 0 |
| Round Mountain | city | Maine | United States | 46.59444 | -68.795 | 1400 | 5 |
| Round Pond | city | Maine | United States | 43.94778 | -69.46167 | 0 | 1806 |
| Rowe Corner | city | Maine | United States | 44.05333 | -70.22722 | 209 | 34850 |
| Rowe Corner | city | Maine | United States | 44.86028 | -69.28556 | 242 | 2656 |
| Roxbury | city | Maine | United States | 44.66972 | -70.59389 | 705 | 1301 |
| Royal Corner | city | Maine | United States | 44.01861 | -70.23944 | 298 | 8274 |
| Royal Junction | city | Maine | United States | 43.79944 | -70.2225 | 91 | 10744 |
| Ruin Corner | city | Maine | United States | 43.7575 | -70.69306 | 298 | 2710 |
| Rumford | city | Maine | United States | 44.55361 | -70.55139 | 498 | 3401 |
| Rumford Center | city | Maine | United States | 44.51306 | -70.61917 | 698 | 3976 |
| Rumford Corner | city | Maine | United States | 44.49472 | -70.67361 | 705 | 1914 |
| Rumford Junction | city | Maine | United States | 44.05417 | -70.25028 | 200 | 18417 |
| Rumford Point | city | Maine | United States | 44.50056 | -70.67167 | 698 | 2635 |
| Russell Corner | city | Maine | United States | 45.0175 | -69.24611 | 396 | 3016 |
| Russell Crossing | city | Maine | United States | 46.65583 | -68.73333 | 898 | 5 |
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