| Oritrophium nevadense | Oritrophium ollgaardii | Oritrophium orizabense |
| Oritrophium peruvianum | Oritrophium repens | Oritrophium tergoalbum |
| Oritrophium venezuelense | Oriturus | Oriturus superciliosus |
| Oriturus superciliosus palliatus | Oriturus superciliosus superciliosus | Orival, Charente |
| Orival, Seine-Maritime | Orivesi | Orixa japonica |
| Oriximiná | Orizaba | Orizânia |
| Orizona | Orkan Çınar | Orkdal |
| Orkhan gazi | Orkhan I | Orkhon (tỉnh) |
| Orkney | Orkoraptor | Orkut |
| Orla | Orlamünde | Orlan-10 |
| Orland Hills, Illinois | Orland Park, Illinois | Orland, Quận Cook, Illinois |
| Orlando Beltran Quevedo | Orlando Beltrán Quevedo | Orlando Bloom |
| Orlando Quevedo | Orlando Zapata | Orlando, FL |
| Orlando, Florida | Orlando, Quận Cheyenne, Kansas | Orlat |
| Orlaya | Orlaya daucoides | Orlândia |
| Orléans | Orléans (định hướng) | Orléans (huyện) |
| Orléans (quận) | Orléat | Orlík nad Vltavou |
| Orlea | Orleanesia | Orleanesia amazonica |
| Orleanesia cuneipetala | Orleanesia ecuadorana | Orleanesia maculata |
| Orleanesia mineirosensis | Orleanesia peruviana | Orleanesia pleurostachys |
| Orleanesia richteri | Orleanesia yauaperyensis | Orleans |
| Orleans, Iowa | Orleans, Louisiana | Orleans, Quận Winneshiek, Iowa |
| Orleix | Orlenbach | Orlesti |
| Orliac | Orliac-de-Bar | Orliaguet |
| Orličky | Orliénas | Orlické Podhůří |
| Orlické Záhoří | Orlien, Quận Ward, Bắc Dakota | Orlitia borneensis |
| Orlogsvaerftet HM.II | Orlogsvaerftet HM.II. | Orlová |
| Orlovice | Orlovsky (huyện của Orel) | Orlovsky (huyện của Rostov) |
| Orlovsky (Khalturinsky) (huyện) | Orlu, Ariège | Orlu, Eure-et-Loir |
| Orly | Orly-sur-Morin | Ormaiztegi |
| Ormana, İbradı | Ormanağzı, Olur | Ormanardı, Bingöl |
| Ormanardı, Eruh | Ormançayı, Çüngüş | Ormanözü, Amasya |
| Ormanözü, Ilgın | Ormanözü, Turhal | Ormanüstü, Maçka |
| Ormanbağı, Şirvan | Ormanbeyli, Tokat | Ormancık, Akkuş |
| Ormancık, Anamur | Ormancık, Çayeli | Ormancık, Dernekpazarı |
| Ormancık, Feke | Ormancık, Karakoçan | Ormancık, Niksar |
| Ormancık, Ondokuzmayıs | Ormancık, Savur | Ormancey |
| Ormandalı, Pervari | Ormandamı, Uşak | Ormandışı, Silvan |
| Ormandibi, Almus | Ormandibi, Yusufeli | Ormangüzle, Bozüyük |
| Ormaniçi, Adıyaman | Ormaniçi, Güçlükonak | Ormaniçi, Maçka |
| Ormaniçi, Pütürge | Ormaniçi, Sındırgı | Ormankadı, Mustafakemalpaşa |
| Ormankaya, Hazro | Ormanköy, Torbalı | Ormanlı, Artvin |
| Ormanlı, Şenkaya | Ormanlı, Şirvan | Ormanlı, Çatalca |
| Ormanlı, Erdek | Ormanlı, Ereğli | Ormanlı, Kalkandere |
| Ormanlı, Tekirdağ | Ormanpınar, Arıcak | Ormanpınar, Baykan |
| Ormanpınarı, Mudurnu | Ormansırtı, Arapgir | Ormanseven, Sürmene |
| Ormantepe, Erfelek | Ormándlak | Ormea |
| Ormelle | Ormenans | Ormeniș |
| Ormenis | Ormenophlebia imperatrix | Ormenophlebia regina |
| Ormenophlebia rollinati | Ormenophlebia saltuum | Ormersviller |
| Ormes, Aube | Ormes, Eure | Ormes, Loiret |
| Ormes, Marne | Ormes, Saône-et-Loire | Ormes-et-Ville |
| Ormesson | Ormesson, Seine-et-Marne | Ormesson-sur-Marne |
| Ormetica abdalsan | Ormetica albimaculifera | Ormetica ameoides |
| Ormetica ataenia | Ormetica bonora | Ormetica chrysomelas |
| Ormetica codasi | Ormetica collateralis | Ormetica contraria |
| Ormetica flavobasalis | Ormetica fulgurata | Ormetica geometrica |
| Ormetica gerhilda | Ormetica goloma | Ormetica guapisa |
| Ormetica iheringi | Ormetica imitata | Ormetica interrupta |
| Ormetica latania | Ormetica longilinea | Ormetica luteola |
| Ormetica maura | Ormetica melea | Ormetica metallica |
| Ormetica nabdalsa | Ormetica neira | Ormetica ochreomarginata |
| Ormetica orbana | Ormetica orbona | Ormetica packardi |
| Ormetica pallidifasciata | Ormetica pallidinervis | Ormetica parma |
| Ormetica pauperis | Ormetica peruviana | Ormetica postradiata |
| Ormetica praetexta | Ormetica pratti | Ormetica pretiosa |
| Ormetica pseudoguapisa | Ormetica rosenbergi | Ormetica rothschildi |
| Ormetica saturata | Ormetica sicilia | Ormetica sphingiformis |
| Ormetica stenotis | Ormetica sypalettius | Ormetica sypilus |
| Ormetica taeniata | Ormetica taniala | Ormetica tanialoides |
| Ormetica temperata | Ormetica triangularis | Ormetica underwoodi |
| Ormetica valera | Ormetica vulcanica | Ormetica xanthia |
| Ormetica zenzeroides | Ormia aldrichi | Ormia australis |
| Ormia bilimekii | Ormia brevicornis | Ormia carreirai |
| Ormia crespoi | Ormia depleta | Ormia dominicana |
| Ormia guianica | Ormia lenkoi | Ormia lenti |
| Ormia lineifrons | Ormia lopesi | Ormia mendesi |
| Ormia nocturna | Ormia nuttingi | Ormia ochracea |
| Ormia pellucida | Ormia punctata | Ormia rachoui |
| Ormia reinhardi | Ormia rosenoi | Ormia rufa |
| Ormia serrei | Ormia tarsalis | Ormia wolcotti |
| Ormia wygodzinskyi | Ormiophasia busckii | Ormiophasia causeyi |
| Ormiophasia costalimai | Ormiophasia cruzi | Ormiophasia inflata |
| Ormiophasia lanei | Ormiophasia morardi | Ormiophasia obscura |
| Ormiophasia tavassosi | Ormiscocerus nitidipennis | Ormiscodes cinnamomea |
| Ormož | Ormoc | Ormocarpopsis |
| Ormocarpopsis aspera | Ormocarpopsis calcicola | Ormocarpopsis itremoensis |
| Ormocarpopsis mandrarensis | Ormocarpopsis parvifolia | Ormocarpopsis tulearensis |
| Ormocarpum | Ormocarpum bernierianum | Ormocarpum caeruleum |
| Ormocarpum cochinchinense | Ormocarpum dhofarense | Ormocarpum drakei |
| Ormocarpum flavum | Ormocarpum guineense | Ormocarpum keniense |
| Ormocarpum kirkii | Ormocarpum klainei | Ormocarpum megalophyllum |
| Ormocarpum muricatum | Ormocarpum pubescens | Ormocarpum schliebenii |
| Ormocarpum sennoides | Ormocarpum somalense | Ormocarpum suberosum |
| Ormocarpum trachycarpum | Ormocarpum trichocarpum | Ormocarpum verrucosum |
| Ormocarpum yemenense | Ormoiche | Ormoloma imrayanum |
| Ormont | Ormosbánya | Ormosia |
| Ormosia (Neserioptera) perpusilla | Ormosia (Oreophila) absaroka | Ormosia (Oreophila) bergrothi |
| Ormosia (Oreophila) bucera | Ormosia (Oreophila) confluenta | Ormosia (Oreophila) flaveola |
| Ormosia (Oreophila) hutchinsonae | Ormosia (Oreophila) leptorhabda | Ormosia (Oreophila) licina |
