| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Ōdōri | city | Hokkaido | Japan | 43.0666667 | 141.3333333 | 59 | 7964 |
| Ōe | city | Hokkaido | Japan | 43.0894444 | 140.7188889 | 252 | 7959 |
| Ōekōzan | city | Hokkaido | Japan | 43.1333333 | 140.6833333 | 656 | 7953 |
| Ōfuna | city | Hokkaido | Japan | 41.9727778 | 140.9052778 | 137 | 4482 |
| Ōfune | city | Hokkaido | Japan | 41.9727778 | 140.9052778 | 137 | 4482 |
| Ōgishi | city | Hokkaido | Japan | 42.5833333 | 140.6333333 | 3 | 2814 |
| Ōhama | city | Hokkaido | Japan | 42.55 | 141.9333333 | 3 | 4943 |
| Ōhira | city | Hokkaido | Japan | 42.7166667 | 143.0333333 | 741 | 8006 |
| Ōhonji | city | Hokkaido | Japan | 43.3869444 | 143.6844444 | 702 | 7921 |
| Ōinosawa | city | Hokkaido | Japan | 42.95 | 143.9 | 173 | 7912 |
| Ōiso | city | Hokkaido | Japan | 45.2333333 | 141.1666667 | 160 | 4316 |
| Ōji | city | Hokkaido | Japan | 43.1166667 | 141.55 | 29 | 7959 |
| Ōjimachi | city | Hokkaido | Japan | 42.6166667 | 141.5833333 | 0 | 3082 |
| Ōkawa | city | Hokkaido | Japan | 41.6833333 | 140.35 | 328 | 8141 |
| Ōkawa | city | Hokkaido | Japan | 43.1833333 | 140.8 | 16 | 5106 |
| Ōkawa | city | Hokkaido | Japan | 42.7333333 | 143.4 | 206 | 8006 |
| Ōkawamachi | city | Hokkaido | Japan | 43.1833333 | 140.8 | 16 | 5106 |
| Ōki | city | Hokkaido | Japan | 42.4905556 | 143.2747222 | 223 | 8040 |
| Ōma | city | Hokkaido | Japan | 41.75 | 141.0833333 | 0 | 3630 |
| Ōmachi | city | Hokkaido | Japan | 42.9833333 | 144.3833333 | 36 | 4927 |
| Ōmagari | city | Hokkaido | Japan | 42.85 | 140.7333333 | 767 | 7991 |
| Ōmagari | city | Hokkaido | Japan | 42.9688889 | 141.4738889 | 387 | 7974 |
| Ōmagari | city | Hokkaido | Japan | 45.0169444 | 141.8513889 | 32 | 7707 |
| Ōmagari | city | Hokkaido | Japan | 44.7 | 142.6 | 905 | 7749 |
| Ōmagari | city | Hokkaido | Japan | 44.0166667 | 144.2333333 | 91 | 7038 |
| Ōmisaki | city | Hokkaido | Japan | 45.5091667 | 141.9372222 | 177 | 2561 |
| Ōmori | city | Hokkaido | Japan | 43.15 | 140.4 | 0 | 3436 |
| Ōmu | city | Hokkaido | Japan | 44.5752778 | 142.9569444 | 101 | 6776 |
| Ōmu-kawajiri | city | Hokkaido | Japan | 44.55 | 142.9833333 | 65 | 4790 |
| Ōno | city | Hokkaido | Japan | 41.8758333 | 140.6397222 | 62 | 8113 |
| Ōnomachi | city | Hokkaido | Japan | 41.8758333 | 140.6397222 | 62 | 8113 |
| Ōnuma | city | Hokkaido | Japan | 41.9738889 | 140.6905556 | 524 | 8103 |
| Ōnuma-shigai | city | Hokkaido | Japan | 41.9738889 | 140.6905556 | 524 | 8103 |
| Ōsawa | city | Hokkaido | Japan | 45.2 | 141.6 | 29 | 5547 |
| Ōta | city | Hokkaido | Japan | 42.2833333 | 139.7833333 | 318 | 2937 |
| Ōta | city | Hokkaido | Japan | 43.0833333 | 144.8 | 131 | 5389 |
| Ōta-shigai | city | Hokkaido | Japan | 43.0833333 | 144.8 | 131 | 5389 |
| Ōtodo | city | Hokkaido | Japan | 44.07 | 141.6705556 | 328 | 5898 |
| Ōtodokko | city | Hokkaido | Japan | 44.07 | 141.6705556 | 328 | 5898 |
| Ōtodoko | city | Hokkaido | Japan | 44.07 | 141.6705556 | 328 | 5898 |
| Ōtomari | city | Hokkaido | Japan | 45.055556 | 142.5244444 | 0 | 2131 |
| Ōtsu | city | Hokkaido | Japan | 42.6844444 | 143.6522222 | 0 | 4782 |
| Ōwada | city | Hokkaido | Japan | 43.9166667 | 141.7 | 232 | 7341 |
| Ōzawa | city | Hokkaido | Japan | 45.2 | 141.6 | 29 | 5547 |
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