List of cities with the letter O 3 letters in the city name. Cities starting with the first letter O 3 letters in the name.
| Name of the city in O 3 letters | Country |
|---|---|
| Oyo | City in Nigeria 3 letters on O |
| Ota | City in Japan 3 letters on O |
| Ome | City in Japan 3 letters on O |
| Obu | City in Japan 3 letters on O |
| Ozu | City in Japan 3 letters on O |
| Ogi | City in Japan 3 letters on O |
| Ohm | City in United Kingdom 3 letters on O |
| Ore | City in Kazakhstan 3 letters on O |
| Ona | City in Switzerland 3 letters on O |
| Osh | City in Kyrgyzstan 3 letters on O |
| Oyo | City in Congo 3 letters on O |
| OEM | City in Gabon 3 letters on O |