| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Onder den Molen | city | Provincie Zeeland | Netherlands | 51.5666667 | 4.2 | 3 | 13835 |
| Oost-Souburg | city | Provincie Zeeland | Netherlands | 51.4666667 | 3.6 | 3 | 66155 |
| Oostburg | city | Provincie Zeeland | Netherlands | 51.3333333 | 3.5 | 6 | 7999 |
| Oostburgsche Brug | city | Provincie Zeeland | Netherlands | 51.3333333 | 3.4666667 | 3 | 7902 |
| Oostdijk | city | Provincie Zeeland | Netherlands | 51.45 | 4.0833333 | 3 | 9138 |
| Oosterland | city | Provincie Zeeland | Netherlands | 51.65 | 4.0333333 | 3 | 9643 |
| Oostkapelle | city | Provincie Zeeland | Netherlands | 51.5666667 | 3.55 | 3 | 14011 |
| Oostkerk | city | Provincie Zeeland | Netherlands | 51.5333333 | 3.8166667 | 3 | 21964 |
| Oostkerke | city | Provincie Zeeland | Netherlands | 51.5333333 | 3.8166667 | 3 | 21964 |
| Oostsoeburg | city | Provincie Zeeland | Netherlands | 51.4666667 | 3.6 | 3 | 66155 |
| Ossenisse | city | Provincie Zeeland | Netherlands | 51.3833333 | 3.9833333 | 3 | 5976 |
| Othene | city | Provincie Zeeland | Netherlands | 51.3333333 | 3.8666667 | 3 | 18027 |
| Oud Vosmeer | city | Provincie Zeeland | Netherlands | 51.5666667 | 4.2 | 3 | 13835 |
| Oud-Sabbinge | city | Provincie Zeeland | Netherlands | 51.5333333 | 3.8 | 3 | 21964 |
| Oud-Vossemeer | city | Provincie Zeeland | Netherlands | 51.5666667 | 4.2 | 3 | 13835 |
| Oude Polder | city | Provincie Zeeland | Netherlands | 51.2166667 | 3.8666667 | 6 | 24870 |
| Oude Stoof | city | Provincie Zeeland | Netherlands | 51.35 | 3.9833333 | 3 | 10579 |
| Oudedorp | city | Provincie Zeeland | Netherlands | 51.4666667 | 3.6666667 | 3 | 44846 |
| Oudeland | city | Provincie Zeeland | Netherlands | 51.3333333 | 3.6 | 3 | 8558 |
| Oudelande | city | Provincie Zeeland | Netherlands | 51.4166667 | 3.85 | 3 | 14335 |
| Oudsdorp | city | Provincie Zeeland | Netherlands | 51.4666667 | 3.6666667 | 3 | 44846 |
| Ouwerkerk | city | Provincie Zeeland | Netherlands | 51.6333333 | 3.9833333 | -3 | 12007 |
| Overslag | city | Provincie Zeeland | Netherlands | 51.2 | 3.8833333 | 9 | 21727 |
| Ovezande | city | Provincie Zeeland | Netherlands | 51.4333333 | 3.8166667 | 3 | 13578 |
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