| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Fort Radium | city | Northwest Territories | Canada | 66.05 | -117.88 | 830 | 0 |
| Fort Rae | city | Northwest Territories | Canada | 62.83 | -116.05 | 830 | 3 |
| Fort Rains | city | Washington | United States | 45.65 | -121.92 | 255 | |
| Fort Raleigh City | city | North Carolina | United States | 35.94 | -75.71 | 29 | |
| Fort Randall | city | South Dakota | United States | 43.02 | -98.62 | 1669 | |
| Fort Randolph | city | Louisiana | United States | 31.32 | -92.45 | 59 | |
| Fort Ransom | city | North Dakota | United States | 46.52 | -97.93 | 1249 | |
| Fort Recovery | city | Ohio | United States | 40.41 | -84.78 | 948 | |
| Fort Refuge | city | Nodwes | Haiti | 20.02 | -72.72 | 3 | 14020 |
| Fort Reina Regente | city | Cotabato | Philippines | 7.02 | 124.55 | 22 | 42708 |
| Fort Reliance | city | Northwest Territories | Canada | 62.70 | -109.13 | 830 | 0 |
| Fort Reliance | city | Yukon | Canada | 64.03 | -139.56 | 1669 | 269 |
| Fort Reliance Seaplane Base | airport | 62.70 | -109.17 | 514 | 0 | ||
| Fort Repoux | city | Inchiri | Mauritania | 19.75 | -14.39 | 830 | 934 |
| Fort Resolution | city | Northwest Territories | Canada | 61.17 | -113.68 | 830 | 48 |
| Fort Resolution Water Aerodrome | airport | 61.16 | -113.68 | 515 | 0 | ||
| Fort Revere | city | Massachusetts | United States | 42.31 | -70.91 | 98 | |
| Fort Reynolds | city | Colorado | United States | 38.23 | -104.30 | 4501 | |
| Fort Rice | city | North Dakota | United States | 46.53 | -100.58 | 1669 | |
| Fort Richardson | city | Alaska | United States | 61.25 | -149.69 | 387 | |
| Fort Rietfontein | city | Omaheke | Namibia | -21.90 | 20.92 | 4189 | 0 |
| Fort Ripley | city | Minnesota | United States | 46.17 | -94.36 | 1207 | |
| Fort Ritner | city | Indiana | United States | 38.77 | -86.28 | 830 | |
| Fort River Caves | city | Arizona | United States | 34.57 | -111.85 | 3349 | |
| Fort Rixon | city | Matabeleland South | Zimbabwe | -20.01 | 29.26 | 4376 | 1341 |
| Fort Robertson | city | Pennsylvania | United States | 40.36 | -77.38 | 830 | |
| Fort Robinson | city | Tennessee | United States | 36.56 | -82.59 | 1197 | |
| Fort Rock | city | Oregon | United States | 43.36 | -121.05 | 4307 | |
| Fort Rodenhuize | city | Vlaanderen | Belgium | 51.13 | 3.78 | 9 | 80570 |
| Fort Romie | city | California | United States | 36.40 | -121.35 | 183 | |
| Fort Roodenhuize | city | Vlaanderen | Belgium | 51.13 | 3.78 | 9 | 80570 |
| Fort Roosevelt | city | California | United States | 36.32 | -119.66 | 196 | |
| Fort Rosebery | city | Luapula | Zambia | -11.20 | 28.89 | 4189 | 46046 |
| Fort Rosecrans | city | California | United States | 32.68 | -117.25 | 150 | |
| Fort Ross | city | Nunavut | Canada | 72.02 | -94.25 | 62 | 0 |
| Fort Royal | city | Saint George | Grenada | 12.06 | -61.75 | 295 | 23632 |
| Fort Royal | city | Lwes | Haiti | 18.44 | -72.91 | 36 | 26201 |
| Fort Royal | city | Martinique | Martinique | 14.61 | -61.08 | 55 | 24322 |
| Fort Royale | city | Martinique | Martinique | 14.61 | -61.08 | 55 | 24322 |
| Fort Run | city | West Virginia | United States | 39.07 | -78.92 | 1102 |