| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Optand | city | Jamtland | Sweden | 63.12 | 14.78 | 1148 | 3100 |
| Optaşi | city | Olt | Romania | 44.58 | 24.65 | 830 | 4082 |
| Optedal | city | Vest-Agder | Norway | 58.55 | 6.73 | 1669 | 54 |
| Optedal | city | Vest-Agder | Norway | 58.15 | 7.17 | 830 | 1126 |
| Opten' | city | Bryanskaya Oblast' | Russia | 52.34 | 32.41 | 830 | 1927 |
| Opteni | city | Bryanskaya Oblast' | Russia | 52.34 | 32.41 | 830 | 1927 |
| Opten’ | city | Bryanskaya Oblast' | Russia | 52.34 | 32.41 | 830 | 1927 |
| Opterusha | city | Rahovec | Kosovo | 42.37 | 20.72 | 1669 | 6407 |
| Opterushë | city | Rahovec | Kosovo | 42.37 | 20.72 | 1669 | 6407 |
| Opteruša | city | Rahovec | Kosovo | 42.37 | 20.72 | 1669 | 6407 |
| Optevoz | city | Rhone-Alpes | France | 45.75 | 5.33 | 1030 | 3551 |
| Opticare | city | Bitola | Macedonia | 40.99 | 21.42 | 1853 | 13149 |
| Optichari | city | Bitola | Macedonia | 40.99 | 21.42 | 1853 | 13149 |
| Optima | city | Oklahoma | United States | 36.76 | -101.36 | 3349 | |
| Optimo | city | New Mexico | United States | 35.89 | -104.80 | 6709 | |
| Optimus | city | Mpumalanga | South Africa | -25.99 | 29.62 | 5206 | 1351 |
| Optimus | city | Arkansas | United States | 36.04 | -92.13 | 830 | |
| Optino | city | Kaluzhskaya Oblast' | Russia | 54.05 | 35.83 | 830 | 11126 |
| Option | city | Pennsylvania | United States | 40.35 | -79.97 | 1102 | |
| Optičari | city | Bitola | Macedonia | 40.99 | 21.42 | 1853 | 13149 |
| Opto Heliport | airport | -22.00 | -47.92 | 2695 | 0 | ||
| Optocici | city | Montenegro | 42.26 | 18.99 | 830 | 2384 | |
| Optomolia | city | Ammochostos | Cyprus | 35.55 | 34.23 | 830 | 446 |
| Optong | city | Korea, Republic of (South) | 34.97 | 127.50 | 830 | 84738 | |
| Optong-ni | city | Korea, Republic of (South) | 34.97 | 127.50 | 830 | 84738 | |
| Optova | city | Volyns'ka Oblast' | Ukraine | 51.38 | 25.68 | 830 | 2002 |
| Optovo | city | Sums'ka Oblast' | Ukraine | 51.62 | 33.21 | 406 | 3006 |
| Optsani | city | Olt | Romania | 44.73 | 24.52 | 1135 | 2984 |
| Optschina | city | Friuli-Venezia Giulia | Italy | 45.69 | 13.79 | 1171 | 127923 |
| Optschinach | city | Friuli-Venezia Giulia | Italy | 45.69 | 13.79 | 1171 | 127923 |
| Optukha | city | Orlovskaya Oblast' | Russia | 53.08 | 36.24 | 830 | 6593 |
| Optăşani | city | Olt | Romania | 44.73 | 24.52 | 1135 | 2984 |