| Otto Bolesławowic | Otto Braun | Otto Braun (dezambiguizare) |
| Otto Briese | Otto briese | Otto Brunfels |
| Otto cel Mare | Otto cel Mare,Sfânt Împărat German | Otto cel Vesel, Duce al Austriei |
| Otto Czekelius | Otto de Ballenstedt | Otto de Bamberg |
| Otto de Bavaria | Otto de Burgundia | Otto de Freising |
| Otto de Habsbourg | Otto de Leuven | Otto de Lorena |
| Otto de Lotharingia Inferioară | Otto de Nordheim | Otto de Vermandois |
| Otto Deßloch | Otto Dessloch | Otto Diels |
| Otto Dix | Otto Eckmann | Otto Ernest Weber |
| Otto Eugen Ernst | Otto F. Babler | Otto Ferdinand von Abensperg und Traun |
| Otto Folberth | Otto Francis de Austria | Otto Frank |
| Otto Franke | Otto František Babler | Otto Friedrich August Benndorf |
| Otto Friedrich Krasser | Otto Frisch | Otto Fritz Jickeli |
| Otto Fritz Meyerhof | Otto Frowein | Otto frowein |
| Otto Günsche | Otto Gelsted | Otto Graf Lambsdorff |
| Otto Gunsche | Otto Hahn | Otto Harrassowitz |
| Otto Heinrich Warburg | Otto Helmut Mayerhoffer | Otto Hindrich |
| Otto Hoffmann von Waldau | Otto Huseklepp | Otto I |
| Otto I al Bavariei | Otto I al Greciei | Otto I al Sfântului Imperiu Roman |
| Otto I de Bavaria | Otto I de Burgundia | Otto I de Carintia |
| Otto I de Geldern | Otto I de Meissen | Otto I de Merania |
| Otto I de Saxonia | Otto I de Suabia şi Bavaria | Otto I de Suabia și Bavaria |
| Otto I de Wittelsbach | Otto I, Împărat al Sfântului Imperiu Roman | Otto I, Împărat Roman |
| Otto I, Sfânt Împărat Roman | Otto II | Otto III |
| Otto III (Bavaria) | Otto J. Schaden | Otto Klemperer |
| Otto Kuntze | Otto Leberecht Lesser | Otto Lesser |
| Otto Lilienthal | Otto Loewi | Otto Ludwig |
| Otto Meyerhof | Otto Nicolai | Otto Paul Hermann Diels |
| Otto Piringer | Otto Preminger | Otto R. Frisch |
| Otto Rank | Otto Redlich | Otto Rehhagel |
| Otto Robert Frisch | Otto Roettig | Otto Roth |
| Otto Schöpp | Otto Schmidt | Otto Scrinzi |
| Otto Skorzeny | Otto Stammer | Otto Stern |
| Otto Stolz | Otto Tellmann | Otto Tolnai |
| Otto von Below | Otto von Bismarck | Otto von Bismark |
| Otto von Guericke | Otto von Habsburg | Otto von Münchhausen |
| Otto von Munchhausen | Otto Wagner | Otto Wallach |
| Otto Wöhler | Otto Weber | Otto Weininger |
| Otto Wernicke | Otto Wilhelm Fischer | Otto Wilhelm Hermann von Abich |
| Otto Winzer | Otto Zardetti | Otto, Indiana |
| Otto, Prinț Moștenitor al Austriei | Otto-Ernest Weber | Otto-Guillaume de Burgundia |
| Otto-Henric de Burgundia | Otto/Novecento | Ottobeuren |
| Ottobiano | Ottobrunn | Ottoi Călin |
| Ottokar al II-lea al Boemiei | Ottokar al II-lea de Stiria | Ottokar al III-lea al Stiriei |
| Ottokar al III-lea de Stiria | Ottokar al IV-lea de Stiria | Ottokar Czernin |
| Ottokar I al Boemiei | Ottokar I de Stiria | Ottola Nesmith |
| Ottoman Railway Company | Ottoman-Wallachian wars | Ottomar Anschütz |
| Ottomar Rodolphe Vlad Dracula Prince Kretzulesco | Otton Sachelarie | Ottone (Italia) |
| Ottone, Emilia-Romagna | Ottorino Respighi | Ottosdal |
| Ottrau | Ottrott | Ottstedt a. Berge |
| Ottweiler | Ottwiller | Otumfuo Nana Osei Tutu al II-lea |
| Otus scops | OTV | Otv |
| Otveşti | Otveşti, Timiş | Otvești |
| Otvești, Timiș | Otwock | Otzberg |
| Otzi | Otzing | Otzingen |
| Otzweiler | Ou | Ou în ceai negru |
| Ou încondeiat | Ou centenar | Ou de o mie de ani |
| Ou de o sută de ani | Ou de Paşti | Ou de Paști |
| Ou marmorat | Ou murat | Ou negru |
| Ou pestriţ | Ou pestriț | OU Press |
| Ouachita County | Ouachita County, Arkansas | Ouachita Parish |
| Ouachita Parish, Louisiana | Ouacif | Ouacifs |
| Ouad Emour | Ouad Naga | Ouadane |
| Ouadda | Ouadhia | Ouadhia District |
| Ouadjana | Ouagadougou | Ouagne |
| Ouaguenoun | Ouahigouya | Ouainville |
| Ouaka | Oualata | Ouallam |
| Ouamri | Ouanaminthe | Ouango |
| Ouangolodougou, Coasta de Fildeş | Ouangolodougou, Coasta de Fildeș | Ouani |
| Ouaninou | Ouanne | Ouanne (Yonne) |
| Ouanougha | Ouara | Ouaragahio |
| Ouardanine | Ouargaye | Ouargla |
| Ouarizane | Ouarville | Ouarzazate |
| Ouéllah | Ouéoulo | Ouésso |
| Ouă | Ouă verzi cu șuncă (serial TV) | Ouăle lui Tarzan |
| Ouăle roşii | Ouăle roșii | Oubangui |
| Ouchamps | Ouches | Oucques |
| Oud-Beijerland | Oud-Heverlee | Oud-Heverlee Leuven |
| Oud-Turnhout | Oudalle | Oudan |
| Oude IJsselstreek | Oude Maas | Oudemans (autor) |
| Oudemans (biolog) | Oudemansiella mucida | Oudenaarde |
| Oudenburg | Ouder-Amstel | Oudergem |
| Ouderkerk | Oudeuil | Oudewater |
| Oudey Jrid | Oudezeele | Oudincourt |
| Oudjana | Oudon | Oudry |
| Oudry (Saône-et-Loire) | Oudtshoorn | Oued Alleug |
| Oued Athmania | Oued Berkeche | Oued Chaaba |
| Oued Chair | Oued Cheham | Oued Chorfa |
| Oued Djemaa | Oued Djer | Oued El Abtal |
| Oued El Alenda | Oued El Alleug | Oued El Aneb |
| Oued El Barad | Oued El Berdi | Oued El Djemaa |
| Oued El Kheïr | Oued El Kheir | Oued El Ma |
| Oued Endja | Oued Essalem | Oued Fodda |
| Oued Fragha | Oued Ghir | Oued Gousine |
| Oued Goussine | Oued Harbil | Oued Keberit |
| Oued Koriche | Oued Lakhdar | Oued lakhdar |
| Oued Lilli | Oued M'Zi | Oued Morra |
| Oued Nini | Oued Rhiou | Oued Sabah |
| Oued Sebaa | Oued Sefioun | Oued Seguen |
| Oued Sly | Oued Smar | Oued Taga |
