| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Ouder Amstel | city | Noord-Holland | Netherlands | 52.29 | 4.92 | -1689 | 141939 |
| Ouderdom | city | Vlaanderen | Belgium | 50.82 | 2.78 | 95 | 12042 |
| Ouderdom | city | KwaZulu-Natal | South Africa | -27.32 | 31.60 | 866 | 18377 |
| Ouderdom | city | KwaZulu-Natal | South Africa | -27.32 | 30.63 | 3569 | 2673 |
| Oudergem | city | Bruxelles-Capitale | Belgium | 50.82 | 4.43 | 232 | 336704 |
| Ouderkerk | city | Zuid-Holland | Netherlands | 51.93 | 4.64 | -1689 | 98988 |
| Ouderkerk | city | Noord-Holland | Netherlands | 52.29 | 4.92 | -1689 | 141939 |
| Ouderkerk Aan Den Amstel | city | Noord-Holland | Netherlands | 52.29 | 4.92 | -1689 | 141939 |
| Ouderkerk a/d Amstel | city | Noord-Holland | Netherlands | 52.29 | 4.92 | -1689 | 141939 |
| Ouderkerk a/d IJssel | city | Zuid-Holland | Netherlands | 51.93 | 4.64 | -1689 | 98988 |
| Ouderkerk a/d Yssel | city | Zuid-Holland | Netherlands | 51.93 | 4.64 | -1689 | 98988 |
| Ouderkerk aan de Amstel | city | Noord-Holland | Netherlands | 52.29 | 4.92 | -1689 | 141939 |
| Ouderkerk aan de IJssel | city | Zuid-Holland | Netherlands | 51.93 | 4.64 | -1689 | 98988 |
| Ouderkerk aan de Yssel | city | Zuid-Holland | Netherlands | 51.93 | 4.64 | -1689 | 98988 |
| Ouderkerk aan den IJssel | city | Zuid-Holland | Netherlands | 51.93 | 4.64 | -1689 | 98988 |
| Ouderkerk aan den Yssel | city | Zuid-Holland | Netherlands | 51.93 | 4.64 | -1689 | 98988 |
| Ouderkerk oan de Amstel | city | Noord-Holland | Netherlands | 52.29 | 4.92 | -1689 | 141939 |
| Ouderkerk-aan-den-IJsel | city | Zuid-Holland | Netherlands | 51.93 | 4.64 | -1689 | 98988 |
| Ouderkerk-sur-lAmstel | city | Noord-Holland | Netherlands | 52.29 | 4.92 | -1689 | 141939 |
| Oudersdeel | city | Free State | South Africa | -27.15 | 28.31 | 5029 | 570 |
| Ouderseel | city | Vlaanderen | Belgium | 51.37 | 4.52 | 65 | 31916 |
| Oudersgift | city | Free State | South Africa | -30.57 | 26.56 | 4383 | 60 |
| Oudersgift | city | Free State | South Africa | -27.57 | 26.46 | 4189 | 916 |
| Oudersorg | city | Free State | South Africa | -30.45 | 26.97 | 5072 | 112 |
| Ouderwijk | city | Nord-Pas-de-Calais | France | 50.88 | 2.08 | 16 | 9184 |
| Ouderzeel | city | Vlaanderen | Belgium | 51.37 | 4.52 | 65 | 31916 |