| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Octa | city | Missouri | United States | 36.17 | -90.12 | 259 | |
| Octa | city | Ohio | United States | 39.60 | -83.61 | 997 | |
| Octagon | city | Alabama | United States | 32.20 | -87.76 | 314 | |
| Octagon | city | Indiana | United States | 40.53 | -86.99 | 830 | |
| Octagon | city | Virginia | United States | 36.90 | -77.90 | 347 | |
| Octagon Estate-Three | city | Pasig | Philippines | 14.61 | 121.10 | 111 | 1218122 |
| Octahatchee | city | Florida | United States | 30.58 | -83.19 | 167 | |
| Octapa | city | Puebla | Mexico | 19.61 | -97.87 | 8562 | 7199 |
| Octapan | city | Veracruz | Mexico | 18.44 | -95.20 | 974 | 40730 |
| Octararo (historical) | city | Maryland | United States | 39.71 | -76.11 | 157 | |
| Octararo Lakes | city | Maryland | United States | 39.70 | -76.12 | 232 | |
| Octatitla | city | Hidalgo | Mexico | 20.89 | -98.52 | 1669 | 8885 |
| Octava | city | Aragua | Venezuela | 10.12 | -67.60 | 1958 | 31965 |
| Octava Manzana de Dos Ríos | city | Michoacan de Ocampo | Mexico | 19.35 | -100.38 | 5869 | 5258 |
| Octave | city | Arizona | United States | 34.14 | -112.69 | 3572 | |
| Octavia | city | Nebraska | United States | 41.35 | -97.06 | 1669 | |
| Octavia | city | Oklahoma | United States | 34.53 | -94.70 | 846 | |
| Octaviano Fonseca | city | Mato Grosso do Sul | Brazil | -21.88 | -53.47 | 997 | 447 |
| Octaviano López | city | Chihuahua | Mexico | 27.00 | -105.03 | 5029 | 43 |
| Octavio | city | Cauca | Colombia | 2.70 | -76.55 | 6079 | 17940 |
| Octavio | city | Artemisa | Cuba | 23.03 | -82.52 | 160 | 26386 |
| Octavio Cordero | city | Azuay | Ecuador | -2.80 | -78.97 | 9228 | 34048 |
| Octavio Cordero Palacios | city | Azuay | Ecuador | -2.80 | -78.97 | 9228 | 34048 |
| Octayo | city | Veracruz | Mexico | 21.34 | -98.44 | 203 | 8290 |
| Octayo Viejo | city | Veracruz | Mexico | 21.34 | -98.43 | 164 | 8092 |
| Octeabriscoe | city | Floresti | Moldova | 47.96 | 28.54 | 830 | 5962 |
| Octeabriscoe | city | Falesti | Moldova | 47.71 | 27.95 | 830 | 46328 |
| Octeabrscoe | city | Falesti | Moldova | 47.71 | 27.95 | 830 | 46328 |
| Octeabrscoe | city | Donduseni | Moldova | 48.34 | 27.67 | 830 | 6211 |
| Octeville | city | Haute-Normandie | France | 49.55 | 0.12 | 239 | 83262 |
| Octeville | city | Basse-Normandie | France | 49.54 | -1.35 | 85 | 3876 |
| Octeville | city | Basse-Normandie | France | 49.63 | -1.64 | 141 | 66670 |
| Octeville-l'Avenel | city | Basse-Normandie | France | 49.54 | -1.35 | 85 | 3876 |
| Octeville-la-Venelle | city | Basse-Normandie | France | 49.54 | -1.35 | 85 | 3876 |
| Octeville-sur-Mer | city | Haute-Normandie | France | 49.55 | 0.12 | 239 | 83262 |
| Octhia | city | Dytiki Ellada | Greece | 38.66 | 21.28 | 127 | 5717 |
| Octimaxal Norte | city | Puebla | Mexico | 20.05 | -97.50 | 2509 | 18398 |
| Octimaxal Sur | city | Puebla | Mexico | 20.00 | -97.54 | 4189 | 13051 |
| Octlamecayo | city | Hidalgo | Mexico | 21.25 | -98.62 | 1030 | 10579 |
| October | city | Kemerovskaya Oblast' | Russia | 56.17 | 88.42 | 830 | 745 |
| October 6 | city | Egypt | 29.95 | 30.92 | 830 | 6333 | |
| October Malable | city | Shabeellaha Hoose | Somalia | 1.98 | 44.83 | 236 | 3272 |
| Octobersdam | city | Free State | South Africa | -29.85 | 25.83 | 5029 | 31 |
| Octol | city | California | United States | 36.12 | -119.33 | 249 | |
| Octon | city | Languedoc-Roussillon | France | 43.65 | 3.30 | 830 | 1831 |
| Octon | city | Nodes | Haiti | 19.42 | -71.73 | 879 | 17361 |
| Octonia | city | Sterea Ellada | Greece | 38.53 | 24.16 | 1725 | 2549 |
| Octopan | city | Guanajuato | Mexico | 20.57 | -100.75 | 5869 | 64798 |
| Octoraro | city | Maryland | United States | 39.66 | -76.15 | 49 | |
| Octoraro Park | city | Maryland | United States | 39.69 | -76.13 | 150 | |
| Octotán | city | Durango | Mexico | 24.47 | -104.63 | 6709 | 1032 |
| Octrol Post | city | Rajasthan | India | 26.67 | 74.71 | 1669 | 30160 |
| Octucho | city | Amazonas | Peru | -6.00 | -78.57 | 4189 | 2741 |
| Octupilla | city | Hidalgo | Mexico | 20.90 | -99.13 | 3740 | 4100 |
| Octzen | city | San Luis Potosi | Mexico | 21.67 | -99.01 | 173 | 11121 |
| Octzen | city | San Luis Potosi | Mexico | 21.62 | -98.96 | 1082 | 16946 |