| Ordona | Ordonnac | Ordonnaz |
| Ordos | Ordos (địa cấp thị) | Ordos (thành phố) |
| Ordovic giữa | Ordovic muộn | Ordovic sớm |
| Ordovician | Ordre du Dragon d' Annam | Ordre national de la Légion d’honneur |
| Ordu | Ordu (tỉnh) | Ordu, Sinop |
| Ordubaşı, Çarşamba | Ordubad (quận) | Orduköy, Çarşamba |
| Ordular, Mudurnu | Ordulukaradere, Cumayeri | Orduzu, Malatya |
| Ordynsky (huyện) | Ordzhonikidze | Ordzhonikidze, Ukraina |
| Ordzhonikidzevsky (huyện) | Ore City, Texas | Ore wa Teppei |
| Ore, Haute-Garonne | Ore, Twintails ni Narimasu!! | Orea |
| Oread | Oreades lativentris | Oreaeschna dictatrix |
| Oreaeschna dominatrix | Oreagrion armeniacum | Oreagrion lorentzi |
| Oreagrion oreadum | Oreagrion pectingi | Oreagrion xanthocyane |
| Oreamnos | Oreamnos americanus | Oreamuno (tổng) |
| Oreana, Illinois | Oreanthes buxifolius | Oreanthes ecuadorensis |
| Oreanthes fragilis | Oreanthes glanduliferus | Oreanthes hypogaeus |
| Oreanthes rotundifolius | Oreanthes sperlingii | Oreas |
| Oreas elongata | Oreas erecta | Oreas martiana |
| Oreas mexicana | OREC | Orecta |
| Orecta acuminata | Orecta fruhstorferi | Orecta lycidas |
| Orecta venedictoffae | Orectanthe | Orectanthe ptaritepuiana |
| Orectanthe sceptrum | Orectis | Orectis barteli |
| Orectis euprepiata | Orectis massiliensis | Orectis proboscidata |
| Orectochilini | Orectochilus | Orectochilus acuductus |
| Orectochilus acutilobus | Orectochilus aeneipennis | Orectochilus afghanus |
| Orectochilus africanus | Orectochilus agilis | Orectochilus agnatus |
| Orectochilus ahlwarthi | Orectochilus alienus | Orectochilus andamanicus |
| Orectochilus angulatus | Orectochilus angusticinctus | Orectochilus annandalei |
| Orectochilus apicalis | Orectochilus archipelagensis | Orectochilus argenteolimbatus |
| Orectochilus assequens | Orectochilus assimilis | Orectochilus baeri |
| Orectochilus bakeri | Orectochilus bataviensis | Orectochilus bicolor |
| Orectochilus biformis | Orectochilus bipartitus | Orectochilus birmanicus |
| Orectochilus boettcheri | Orectochilus brevidens | Orectochilus brevitarsis |
| Orectochilus brincki | Orectochilus caliginosus | Orectochilus cameroni |
| Orectochilus cardiophorus | Orectochilus cardoni | Orectochilus castaneus |
| Orectochilus castetsi | Orectochilus cavernicola | Orectochilus celebensis |
| Orectochilus chalceus | Orectochilus chinensis | Orectochilus choprai |
| Orectochilus coimbatorensis | Orectochilus compressus | Orectochilus conspicuus |
| Orectochilus coomani | Orectochilus cordatus | Orectochilus corniger |
| Orectochilus corporaali | Orectochilus corpulentus | Orectochilus crassipes |
| Orectochilus cribratellus | Orectochilus cuneatus | Orectochilus cupreolus |
| Orectochilus cylindricus | Orectochilus dehiscens | Orectochilus depressiusculus |
| Orectochilus desgodinsi | Orectochilus dilatatus | Orectochilus discifer |
| Orectochilus discus | Orectochilus dispar | Orectochilus distinguendus |
| Orectochilus divergens | Orectochilus drescheri | Orectochilus dulitensis |
| Orectochilus eberti | Orectochilus emmerichi | Orectochilus fairmairei |
| Orectochilus fallax | Orectochilus feae | Orectochilus ferruginicollis |
| Orectochilus figuratus | Orectochilus fletcheri | Orectochilus florensis |
| Orectochilus foersteri | Orectochilus formosanus | Orectochilus fraternus |
| Orectochilus fruhstorferi | Orectochilus fusiformis | Orectochilus gangeticus |
| Orectochilus gestroi | Orectochilus grandipes | Orectochilus haemorrhous |
| Orectochilus helferi | Orectochilus himalayensis | Orectochilus hirtellus |
| Orectochilus horni | Orectochilus indicus | Orectochilus indulans |
| Orectochilus jaechi | Orectochilus javanus | Orectochilus jilanzhui |
| Orectochilus kempi | Orectochilus kinabaluensis | Orectochilus klapperichi |
| Orectochilus klynstrai | Orectochilus landaisi | Orectochilus laticinctus |
| Orectochilus latimanus | Orectochilus limbatus | Orectochilus longulus |
| Orectochilus lucidus | Orectochilus lumbaris | Orectochilus malaisei |
| Orectochilus marginepennis | Orectochilus matruelis | Orectochilus melli |
| Orectochilus metallicus | Orectochilus mimicus | Orectochilus minusculus |
| Orectochilus mjobergi | Orectochilus mjobergianus | Orectochilus murinus |
| Orectochilus murudensis | Orectochilus musculus | Orectochilus nathani |
| Orectochilus neglectus | Orectochilus nigricans | Orectochilus nigroaeneus |
| Orectochilus nipponensis | Orectochilus nitens | Orectochilus nuristanicus |
| Orectochilus oberthueri | Orectochilus oblongiusculus | Orectochilus obscuriceps |
| Orectochilus obtusangulus | Orectochilus obtusipennis | Orectochilus orbisonorum |
| Orectochilus orissaensis | Orectochilus ornaticollis | Orectochilus oxygonus |
| Orectochilus palawanensis | Orectochilus palliatus | Orectochilus panoembanganus |
| Orectochilus patellimanus | Orectochilus pendleburyi | Orectochilus pescheti |
| Orectochilus pfisteri | Orectochilus philippinarum | Orectochilus pilosellus |
| Orectochilus planatus | Orectochilus planiusculus | Orectochilus procerus |
| Orectochilus productus | Orectochilus pubescens | Orectochilus pulchellus |
| Orectochilus punctilabris | Orectochilus punctipennis | Orectochilus punctulatus |
| Orectochilus pusillus | Orectochilus regimbarti | Orectochilus ribeiroi |
| Orectochilus ritsemae | Orectochilus rivularis | Orectochilus ruficaudatus |
| Orectochilus samarensis | Orectochilus scalaris | Orectochilus schillhammeri |
| Orectochilus schultzei | Orectochilus sculpturatus | Orectochilus seminitens |
| Orectochilus semivestitus | Orectochilus severini | Orectochilus similis |
| Orectochilus sinhalensis | Orectochilus spiniger | Orectochilus spinosus |
| Orectochilus staudingeri | Orectochilus strandi | Orectochilus striolifer |
| Orectochilus sublineatus | Orectochilus subsinuatus | Orectochilus sulcipennis |
| Orectochilus sutteri | Orectochilus teranishii | Orectochilus tibialis |
| Orectochilus timorensis | Orectochilus tomentosus | Orectochilus tonkinensis |
| Orectochilus trianguliger | Orectochilus undulans | Orectochilus validus |
| Orectochilus velatus | Orectochilus vestitus | Orectochilus villosovittatus |
| Orectochilus villosus | Orectochilus vitalisi | Orectochilus volubilis |
| Orectochilus wangi | Orectochilus waterstradti | Orectochilus wehnckei |
| Orectochilus wui | Orectochilus yayeyamensis | Orectochilus zeravschanicus |
| Orectogyrus | Orectogyrus albertianus | Orectogyrus alluaudi |
| Orectogyrus angularis | Orectogyrus argenteovittatus | Orectogyrus assimilis |
| Orectogyrus aureovittatus | Orectogyrus aureus | Orectogyrus baguenai |
| Orectogyrus barrosmachadoi | Orectogyrus basilewskyi | Orectogyrus bedeli |
| Orectogyrus bicostatus | Orectogyrus buettikoferi | Orectogyrus burgeoni |
| Orectogyrus camerunensis | Orectogyrus capicolus | Orectogyrus centralis |
| Orectogyrus coerulescens | Orectogyrus collarti | Orectogyrus conjugens |
| Orectogyrus constrictus | Orectogyrus convexus | Orectogyrus coptogynus |
| Orectogyrus costatus | Orectogyrus cuprifer | Orectogyrus curvipes |
| Orectogyrus cyanicollis | Orectogyrus cyanipterus | Orectogyrus dahomeensis |
| Orectogyrus decorsei | Orectogyrus dedalus | Orectogyrus demeryi |
| Orectogyrus dimidiatus | Orectogyrus discors | Orectogyrus dorsiger |
