| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Obatake | city | Saitama-ken | Japan | 35.9725 | 139.1263889 | 1640 | 216430 |
| Ochiai | city | Saitama-ken | Japan | 36.1166667 | 139.5333333 | 49 | 216087 |
| Ogano | city | Saitama-ken | Japan | 36.0166667 | 139 | 1026 | 216315 |
| Ogawa | city | Saitama-ken | Japan | 36.05 | 139.2666667 | 465 | 216202 |
| Ogimachiya | city | Saitama-ken | Japan | 35.8333333 | 139.4 | 328 | 307340 |
| Ogose | city | Saitama-ken | Japan | 35.9588889 | 139.29 | 295 | 216430 |
| Oi | city | Saitama-ken | Japan | 35.8511111 | 139.5166667 | 75 | 217539 |
| Okegawa | city | Saitama-ken | Japan | 36 | 139.5572222 | 65 | 216430 |
| Okubo | city | Saitama-ken | Japan | 35.9852778 | 139.0255556 | 984 | 216430 |
| Okugawamachi | city | Saitama-ken | Japan | 36 | 139.5572222 | 65 | 216430 |
| Okurayama | city | Saitama-ken | Japan | 35.9352778 | 139.1722222 | 1312 | 216543 |
| Omiya | city | Saitama-ken | Japan | 35.9072222 | 139.6202778 | 52 | 216658 |
| Oniishi | city | Saitama-ken | Japan | 36.15 | 139.0666667 | 803 | 155579 |
| Onishi | city | Saitama-ken | Japan | 36.15 | 139.0666667 | 803 | 155579 |
| Ono | city | Saitama-ken | Japan | 35.9883333 | 139.2022222 | 1148 | 216430 |
| Osawa | city | Saitama-ken | Japan | 35.9 | 139.7833333 | 22 | 216658 |
| Oshi | city | Saitama-ken | Japan | 36.1333333 | 139.45 | 59 | 204674 |
| Owada | city | Saitama-ken | Japan | 35.8 | 139.55 | 124 | 299050 |
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