| Oberonia punctata | Oberonia pyrulifera | Oberonia quadrata |
| Oberonia quadridentata | Oberonia quadrilatera | Oberonia radicans |
| Oberonia raoi | Oberonia rasmussenii | Oberonia recurva |
| Oberonia reilloi | Oberonia repens | Oberonia reversidens |
| Oberonia rhizomatosa | Oberonia rhizophoreti | Oberonia rhodostachys |
| Oberonia rimachila | Oberonia ritaii | Oberonia rivularis |
| Oberonia rosea | Oberonia rotunda | Oberonia ruberrima |
| Oberonia rubra | Oberonia rufilabris | Oberonia salakana |
| Oberonia santapaui | Oberonia sarawakensis | Oberonia sarcophylla |
| Oberonia scapigera | Oberonia scyllae | Oberonia scytophylla |
| Oberonia sebastiana | Oberonia segawae | Oberonia seidenfadeniana |
| Oberonia seidenfadenii | Oberonia semifimbriata | Oberonia seranica |
| Oberonia serpentinicaulis | Oberonia serrulata | Oberonia setigera |
| Oberonia similis | Oberonia singalangensis | Oberonia sinica |
| Oberonia sinuosa | Oberonia spathipetala | Oberonia stenophylla |
| Oberonia subanajamensis | Oberonia subligaculifera | Oberonia suborbicularis |
| Oberonia sulcata | Oberonia sumatrensis | Oberonia surigaensis |
| Oberonia tahitensis | Oberonia tenuis | Oberonia teres |
| Oberonia thisbe | Oberonia thomsenii | Oberonia thwaitesii |
| Oberonia titania | Oberonia tixieri | Oberonia tjisokanensis |
| Oberonia tomohonensis | Oberonia toppingii | Oberonia torana |
| Oberonia torricellensis | Oberonia transversiloba | Oberonia triangularis |
| Oberonia trichophora | Oberonia trigonoglossa | Oberonia trochopetala |
| Oberonia truncata | Oberonia truncatiglossa | Oberonia urostachya |
| Oberonia valetoniana | Oberonia variabilis | Oberonia verticillata |
| Oberonia vieillardii | Oberonia volucris | Oberonia vulcanica |
| Oberonia wallichii | Oberonia wallie-silvae | Oberonia wappeana |
| Oberonia wariana | Oberonia watuwilensis | Oberonia wenzelii |
| Oberonia weragamaensis | Oberonia werneri | Oberonia wightiana |
| Oberonia wynadensis | Oberonia zeylanica | Oberonia zimmermanniana |
| Oberonioides | Oberonioides microtatantha | Oberonioides oberoniiflora |
| Oberonomyia palpalis | Oberoppurg | Oberostendorf |
| Oberotterbach | Oberottmarshausen | Oberpöring |
| Oberpfaffenhofen | Oberpfalz | Oberpierscheid |
| Oberpleichfeld | Oberraden | Oberrüti |
| Oberrœdern | Oberreißen | Oberreichenbach |
| Oberreichenbach, Erlangen-Höchstadt | Oberreidenbach | Oberrettenbach |
| Oberrheintal (huyện) | Oberried am Brienzersee | Oberried, Breisgau-Hochschwarzwald |
| Oberrieden, Unterallgäu | Oberriexingen | Oberroßbach |
| Oberrot | Oberroth | Obersaasheim |
| Obersöchering | Obersüßbach | Obersülzen |
| Oberschaeffolsheim | Oberschöna | Oberschönau |
| Oberschönegg | Oberscheidweiler | Oberscheinfeld |
| Oberschleißheim | Oberschlettenbach | Oberschlierbach |
| Oberschneiding | Oberschwarzach | Oberschweinbach |
| Obersiebenbrunn | Obersimmental (huyện) | Obersimten |
| Obersontheim | Obersoultzbach | Oberspreewald-Lausitz |
| Oberstadt | Oberstadtfeld | Oberstaufen |
| Oberstaufenbach | Oberstdorf | Obersteckholz |
| Oberstedem | Obersteinbach | Obersteinbach (Bas-Rhin) |
| Obersteinebach | Oberstenfeld | Oberstinzel |
| Oberstocken | Oberstorcha | Oberstreit |
| Oberstreu | Obertaufkirchen | Oberthal (Saar) |
| Oberthal, Bern | Oberthal, Sankt Wendel | Oberthulba |
| Obertiefenbach | Oberto, conte di San Bonifacio | Obertoggenburg (huyện) |
| Obertraubling | Obertraun | Obertrebra |
| Obertrubach | Oberuckersee | Oberviechtach |
| Obervisse | Obervogau | Oberwallmenach |
| Oberwaltersdorf | Oberwambach | Oberwang |
| Oberwölz Stadt | Oberwölz Umgebung | Oberwörresbach |
| Oberweg | Oberweißbach | Oberweid |
| Oberweiler | Oberweiler im Tal | Oberweiler-Tiefenbach |
| Oberweis, Bitburg-Prüm | Oberwesel | Oberwiera |
| Oberwies | Oberwiesen | Oberwil-Lieli |
| Oberzeiring | Oberzissen | Obesotoma |
| Obesotoma gigantea | Obesotoma gigas | Obesotoma hokkaidoensis |
| Obesotoma iessoensis | Obesotoma japonica | Obesotoma laevigata |
| Obesotoma okutanii | Obesotoma oyashio | Obesotoma pulcherrima |
| Obesotoma robusta | Obesotoma sachalinensis | Obesotoma schantarica |
| Obesotoma simplex | Obesotoma solida | Obesotoma starobogatovi |
| Obesotoma tenuilirata | Obesotoma tumida | Obesotoma uchidai |
| Obesotoma woodiana | Obesypena | Obetia |
| Obetia carruthersiana | Obetia ficifolia | Obetia madagascariensis |
| Obetia radula | Obetia tenax | Obetz, Ohio |
| OBEX | Obex | Obhausen |
| Obi (khăn quấn) | Obi (khăn thắt lưng) | Obi Worldphone |
| Obi-Wan Kenobi | Obidos (tiểu vùng) | Obies |
| Obihiro, Hokkaidō | Obihiro, Hokkaido | Obila |
| Obila abbreviata | Obila albifasciata | Obila anguinata |
| Obila aristata | Obila artificata | Obila balteolata |
| Obila bowreyi | Obila catocalaria | Obila celerata |
| Obila chama | Obila cometes | Obila decertaria |
| Obila defensata | Obila delineata | Obila diffusata |
| Obila dispar | Obila divulsata | Obila dominatria |
| Obila emanata | Obila floccosaria | Obila inangulata |
| Obila latemaculata | Obila pannosata | Obila paularia |
| Obila praecuraria | Obila rufomarginata | Obila ruptiferata |
| Obila simpliciata | Obila tabascana | Obila umbrinata |
| Obila velutina | Obila xantholiva | Obing |
| Obira | Obispo Ramos de Lora (khu tự quản) | Obispos (khu tự quản) |
| Obitan | Obitan Nguyên tử | Obitan nguyên tử |
| Obithome | Obiwan Kenobi | Obiwan-Kenobi |
| Objat | Object Linking and Embedding | Object Pascal |
| Objection (Tango) | Oblast | Obleck |
| Oblinghem | Obliquogobius | Oblitoneura agromyzina |
| Oblitoneura aromyzina | Oblivia | Oblivia ceronii |
| Oblivia mikanioides | Oblivia simplex | Oblivion (phim 2013) |
| Oblivsky (huyện) | Oblong rocksnail | Oblong, Illinois |
| Oblong, Quận Crawford, Illinois | Obluchensky (huyện) | Obluchye |
| OBN Star Model | OBN STAR Model | Obninsk |
