| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Mount Radnor Heights | city | Maryland | United States | 39.30 | -77.19 | 830 | |
| Mount Rainbow | city | Queensland | Australia | -24.14 | 150.71 | 997 | 0 |
| Mount Rainier | city | Maryland | United States | 38.94 | -76.96 | 91 | |
| Mount Rat | city | South Australia | Australia | -34.63 | 137.58 | 249 | 231 |
| Mount Read | city | New York | United States | 43.25 | -77.66 | 311 | |
| Mount Regis Heights | city | Virginia | United States | 37.27 | -80.06 | 1099 | |
| Mount Rena | city | South Carolina | United States | 33.52 | -79.13 | 3 | |
| Mount Repose | city | Ohio | United States | 39.20 | -84.22 | 875 | |
| Mount Rex | city | New Zealand | -36.63 | 174.45 | 275 | 2416 | |
| Mount Rich | city | Saint Patrick | Grenada | 12.18 | -61.63 | 830 | 25209 |
| Mount Richmond | city | Victoria | Australia | -38.28 | 141.40 | 393 | 0 |
| Mount Riddoch | city | Northern Territory | Australia | -23.04 | 134.67 | 2020 | 0 |
| Mount Riddock | city | Northern Territory | Australia | -23.04 | 134.67 | 2020 | 0 |
| Mount Riddock Airport | airport | -23.03 | 134.68 | 0 | |||
| Mount Riddock Homestead | city | Northern Territory | Australia | -23.04 | 134.67 | 2020 | 0 |
| Mount Riga | city | New York | United States | 41.99 | -73.51 | 830 | |
| Mount Ringold Farm | city | Virginia | United States | 38.32 | -77.41 | 200 | |
| Mount Rise | city | Eastern Cape | South Africa | -31.28 | 27.94 | 4612 | 42 |
| Mount Rivers | city | New South Wales | Australia | -32.37 | 151.49 | 167 | 446 |
| Mount Rivers | city | Kerry | Ireland | 52.09 | -9.77 | 62 | 4683 |
| Mount Rivers | city | Cork | Ireland | 51.97 | -8.83 | 830 | 1401 |
| Mount Rivers | city | Cork | Ireland | 52.15 | -8.24 | 173 | 7378 |
| Mount Rivers | city | Ireland | 52.13 | -7.85 | 78 | 1807 | |
| Mount Road | city | Eastern Cape | South Africa | -33.95 | 25.59 | 295 | 234447 |
| Mount Robson | city | British Columbia | Canada | 53.02 | -119.23 | 4606 | 0 |
| Mount Rock | city | Pennsylvania | United States | 40.02 | -77.56 | 830 | |
| Mount Rock | city | Pennsylvania | United States | 40.16 | -77.32 | 830 | |
| Mount Rock | city | Pennsylvania | United States | 40.61 | -77.57 | 830 | |
| Mount Roper | city | Northern Cape | South Africa | -27.35 | 23.21 | 4235 | 120 |
| Mount Rose | city | Saint Patrick | Grenada | 12.18 | -61.62 | 209 | 22194 |
| Mount Rose | city | Saint David | Grenada | 12.03 | -61.72 | 193 | 28705 |
| Mount Rose | city | Eastern Cape | South Africa | -31.28 | 27.94 | 4612 | 42 |
| Mount Rose | city | Eastern Cape | South Africa | -31.26 | 27.93 | 5049 | 41 |
| Mount Rose | city | New Jersey | United States | 40.37 | -74.74 | 203 | |
| Mount Rose | city | North Carolina | United States | 36.26 | -76.67 | 19 | |
| Mount Rosie | city | Singapore | 1.32 | 103.83 | 3 | 1178038 | |
| Mount Ross | city | New York | United States | 42.01 | -73.72 | 830 | |
| Mount Rowan | city | Victoria | Australia | -37.50 | 143.85 | 1837 | 14800 |
| Mount Royal | city | Saint George | Grenada | 12.05 | -61.75 | 85 | 26680 |
| Mount Royal | city | New Zealand | -45.50 | 170.70 | 223 | 149 | |
| Mount Royal | city | KwaZulu-Natal | South Africa | -28.92 | 31.32 | 1669 | 5540 |
| Mount Royal | city | Matabeleland South | Zimbabwe | -20.07 | 29.34 | 4537 | 1341 |
| Mount Royal | city | Florida | United States | 29.43 | -81.52 | 55 | |
| Mount Royal | city | New Jersey | United States | 39.81 | -75.21 | 49 | |
| Mount Royal | city | Pennsylvania | United States | 40.04 | -76.89 | 400 | |
| Mount Royal | city | Maryland | United States | 39.31 | -76.63 | 147 | |
| Mount Royer | city | Saint Lucy | Barbados | 13.30 | -59.62 | 377 | 36368 |
| Mount Rozell | city | Alabama | United States | 34.94 | -87.14 | 830 | |
| Mount Rule Farm Airstrip | airport | 54.18 | -4.51 | 0 | |||
| Mount Rupert | city | Northern Cape | South Africa | -28.17 | 24.47 | 3349 | 341 |
| Mount Rush | city | Virginia | United States | 37.54 | -78.61 | 830 | |
| Mount Russell | city | New South Wales | Australia | -29.68 | 150.93 | 2509 | 0 |
| Mount Ruundzi | city | Zimbabwe | -18.60 | 31.72 | 4189 | 3731 | |
| Mount Ryde | city | Queensland | Australia | -23.32 | 143.17 | 872 | 0 |