| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Neptedada | city | Nepal | 27.27 | 86.39 | 4189 | 16688 | |
| Neptedanda | city | Nepal | 27.27 | 86.39 | 4189 | 16688 | |
| Nepton | city | Kentucky | United States | 38.44 | -83.83 | 882 | |
| Neptun | city | Mogilevskaya Oblast' | Belarus | 53.16 | 29.69 | 830 | 1355 |
| Neptun | city | Ida-Virumaa | Estonia | 59.43 | 28.06 | 49 | 9030 |
| Neptun | city | Tatarstan | Russia | 55.66 | 49.76 | 830 | 298 |
| Neptun Horgásztanya | city | Pest | Hungary | 47.10 | 19.02 | 291 | 6024 |
| Neptun Horgásztelep | city | Pest | Hungary | 47.10 | 19.02 | 291 | 6024 |
| Neptuna | city | Cundinamarca | Colombia | 4.48 | -74.50 | 2572 | 11543 |
| Neptune | city | Saskatchewan | Canada | 49.37 | -104.07 | 2024 | 0 |
| Neptune | city | Mashonaland East | Zimbabwe | -17.73 | 31.45 | 4189 | 2682 |
| Neptune | city | Iowa | United States | 42.66 | -96.16 | 1669 | |
| Neptune | city | Ohio | United States | 40.60 | -84.49 | 846 | |
| Neptune | city | Tennessee | United States | 36.35 | -87.20 | 830 | |
| Neptune | city | West Virginia | United States | 39.08 | -81.78 | 830 | |
| Neptune | city | Wisconsin | United States | 43.37 | -90.27 | 839 | |
| Neptune Beach | city | Florida | United States | 30.31 | -81.40 | 9 | |
| Neptune Beach | city | Washington | United States | 48.82 | -122.71 | 62 | |
| Neptune City | city | New Jersey | United States | 40.20 | -74.03 | 6 | |
| Neptune City (historical) | city | Nevada | United States | 40.71 | -118.02 | 4399 | |
| Neptune Park | city | Connecticut | United States | 41.31 | -72.10 | 0 | |
| Neptune's Corner | city | Western Cape | South Africa | -34.10 | 18.47 | 0 | 132512 |
| Neptune’s Corner | city | Western Cape | South Africa | -34.10 | 18.47 | 0 | 132512 |
| Neptunia | city | Canelones | Uruguay | -34.79 | -55.88 | 19 | 30645 |
| Neptunium | city | Lazio | Italy | 41.45 | 12.65 | 0 | 32582 |
| Neptuno | city | La Habana | Cuba | 23.03 | -82.45 | 209 | 192881 |
| Neptuno | city | Artemisa | Cuba | 22.76 | -82.73 | 13 | 20922 |
| Neptuno | city | Lima | Peru | -12.08 | -76.97 | 1125 | 1174486 |