| Name | Website | Location | |
|---|---|---|---|
| Ocean's News | oceans-news.com | Cote D'Ivoire (Ivory Coast) | View publication |
| Oceana USA | usa.oceana.org | United States | View publication |
| Océane | oceane.ouest-france.fr | France | View publication |
| Oceania Football Confederation | oceaniafootball.com | New Zealand | View publication |
| Oceanic Society | oceanicsociety.org | United States | View publication |
| Oceanmedias | oceansmedias.com | United Arab Emirates | View publication |
| Oceanographic | oceanographicmagazine.com | United States | View publication |
| Oceans Job Board | oceansjobboard.com | United States | View publication |
| Ocenění českých podnikatelek | oceneniceskychpodnikatelek.cz | Czech Republic | View publication |
| Ochranaprirody (Cas Opis) | casopis.ochranaprirody.cz | Czech Republic | View publication |