| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Opalevo | city | Moskovskaya Oblast' | Russia | 56.38 | 36.83 | 830 | 5238 |
| Opalikha | city | Moskovskaya Oblast' | Russia | 55.83 | 37.25 | 830 | 38749 |
| Opritovo | city | Moskovskaya Oblast' | Russia | 56.33 | 36.83 | 830 | 7776 |
| Opritowo | city | Moskovskaya Oblast' | Russia | 56.33 | 36.83 | 830 | 7776 |
| Opytnoye Khozyaystvo | city | Moskovskaya Oblast' | Russia | 55.62 | 37.21 | 830 | 56613 |
| Opytnoye Khozyaystvo Tolstopal'tsevo | city | Moskovskaya Oblast' | Russia | 55.62 | 37.21 | 830 | 56613 |
| Opytnoye Khozyaystvo Tolstopal’tsevo | city | Moskovskaya Oblast' | Russia | 55.62 | 37.21 | 830 | 56613 |
| Opytnoye Khozyaystvo Yermolino | city | Moskovskaya Oblast' | Russia | 56.15 | 37.49 | 830 | 3223 |