| Obrium cephalotes | Obrium cicatricosum | Obrium circumcinctum |
| Obrium circunflexum | Obrium clerulum | Obrium complanatum |
| Obrium constricticolle | Obrium constricticollis | Obrium consulare |
| Obrium coomani | Obrium cordicolle | Obrium cordicollis |
| Obrium costaricum | Obrium cribripenne | Obrium cruciferum |
| Obrium dejeanii | Obrium dentatum | Obrium dimidiatum |
| Obrium discoideum | Obrium dominicum | Obrium dorsale |
| Obrium elongatum | Obrium fabricianum | Obrium facetum |
| Obrium filicorne | Obrium formosanum | Obrium foveipenne |
| Obrium fractum | Obrium fumigatum | Obrium fuscatum |
| Obrium fuscoapicalis | Obrium giesberti | Obrium glabrum |
| Obrium guttigerum | Obrium gynandropsidis | Obrium hainanum |
| Obrium hattai | Obrium helvolum | Obrium howdeni |
| Obrium huae | Obrium ibidionoides | Obrium immite |
| Obrium invenustum | Obrium japonicum | Obrium kusamai |
| Obrium laosicum | Obrium laterale | Obrium lituratum |
| Obrium longicorne | Obrium longithoracicum | Obrium maculatum |
| Obrium moestum | Obrium mozinnae | Obrium multifarium |
| Obrium nakanei | Obrium nitidicolle | Obrium obliquum |
| Obrium oblongo-guttulum | Obrium oblongoguttulum | Obrium oculatum |
| Obrium pallidisignatum | Obrium pallidium | Obrium pallidum |
| Obrium peninsulare | Obrium piceorubrum | Obrium piperitum |
| Obrium planicolle | Obrium prosperum | Obrium pygmaeum |
| Obrium quadrifasciatum | Obrium rubidum | Obrium rubrum |
| Obrium ruficolle | Obrium rufograndum | Obrium rufulum |
| Obrium schwarzeri | Obrium takahashii | Obrium takeshitai |
| Obrium tavakiliani | Obrium translucidum | Obrium tricolor |
| Obrium trifasciatum | Obrium vicinum | Obrium xanthum |
| Obrivistyj Island | Obrnice | Obroatis |
| Obroatis chloropis | Obroatis columba | Obroatis cratinus |
| Obroatis curvilineata | Obroatis distincta | Obroatis ellops |
| Obroatis gatena | Obroatis humeralis | Obroatis licentiata |
| Obroatis negata | Obroatis nigriscripta | Obroatis ocellata |
| Obroatis reniplaga | Obroatis rhodocraspis | Obroatis rivularis |
| Obroatis roseipalpis | Obroatis rufa | Obroatis signata |
| Obroatis vinea | Obrochishhe | Obrogen Villa |
| Obrotjisjte | Obrovac | Obrovazzo |
| Obrovia | Obrovia neglecta | Obrsani |
| Obrsjani | Obrtka | Obručan |
| Obručan-Veli | Obruby | Obruchev |
| Obruchev Hills | Obruchev, Mount | Obrucheva, gora |
| Obrucheva, holmy | Obruchishhe | Obrussa |
| Obrussa ochrefasciella | Obruten mark | Obruten myt |
| Obrutjev, Vladimir | Obrutjisjte | Obrytbar ed |
| Obrytbara Eden | Obrytbara eden | Obryvistyj, ostrov |
| Obryzaceae | Obryzum | Obryzum corniculatum |
| Obryzum dolichoterum | Obryzum friesii | OBS |
| Obs | Obs (olika betydelser) | OBS (radioprogram) |
| Obs (ytmått) | OBS Kulturkvarten | OBS Magasin |
| Obs! | OBS! | Obs! (tidskrift) |
| OBS! Kulturkvarten | Obs! Stormarknad, Vårby | Obs-nur |
| Obscen | Obscenitet | Obscura |
| Obscura (band) | Obscura (musikgrupp) | Obscure |
| ObsCure | Obscure Alternatives | ObsCure II |
| Obscured by Clouds | Obscuria incerta | Obscuria spinicosta |
| Obscuriphantes | Obscuriphantes obscurus | Obscuriphantes pseudoobscurus |
| Obscuriphora | Obscuriphora sheppardi | Obscurodiscus |
| Obscurodiscus myricae | Obscuromyia | Obscuromyia westralica |
| Obscuropterus | Obscuropterus melanargyrea | Observabel |
| Observabel (kvantmekanik) | Observabler | Observanter |
| Observasjonsberget | Observatör | Observatör (designmönster) |
| Observatörsstatus i FN:s generalförsamling | Observation | Observation Bank |
| Observation Hill | Observation Island | Observation Island (ö i Antarktis) |
| Observation Island (ö i Kanada) | Observation Island, Antarktis | Observation Island, Nunavut |
| Observation Peak | Observation Peak (bergstopp i Kanada) | Observationell astronomi |
| Observationshumor | Observationskomik | Observationssats |
| Observatoire de Marseille | Observatoire de Paris | Observator |
| Observator (tidning) | Observatoriebacken | Observatorieberget |
| Observatorieberget, Saltsjöbaden | Observatoriegatan | Observatorieheia |
| Observatoriekullen | Observatorielunden | Observatoriemuseet |
| Observatorieparken, Uppsala | Observatorier | Observatoriet |
| Observatoriet Frostviken | Observatoriet i Berlin | Observatoriet i Greenwich |
| Observatoriet i Paris | Observatoriet i Slottsskogen | Observatorio |
| Observatorio Astronómico de La Plata | Observatorio Astronómico de La Sagra | Observatorio Island |
| Observatorium | Observatorium Robert Morris | Observatorium Tusculanum |
| Observatory Cay | Observatory Cay (ö i Australien, lat -21,02, long 154,38) | Observatory Cay (ö i Australien, lat -21,26, long 155,80) |
| Observatory Cay, Frederick Reefs | Observatory Cay, Kenn Reefs | Observatory Creek |
| Observatory Island | Observer | Observer AB |
| Observerbara universum | Obsessed | Obsession |
| Obsession (låt) | Obsession (musikalbum) | Obsession (sång) |
| Obsession: Radical Islam's War Against the West | Obsessive-compulsive disorder | Obshtina Aksakovo |
| Obshtina Alfatar | Obshtina Anton | Obshtina Antonovo |
| Obshtina Apriltsi | Obshtina Ardino | Obshtina Asenovgrad |
| Obshtina Avren | Obshtina Aytos | Obshtina Balchik |
| Obshtina Banite | Obshtina Bankya | Obshtina Bansko |
| Obshtina Batak | Obshtina Bela Slatina | Obshtina Belene |
| Obshtina Belitsa | Obshtina Belogradchik | Obshtina Beloslav |
| Obshtina Belovo | Obshtina Berkovitsa | Obshtina Blagoevgrad |
| Obshtina Boboshevo | Obshtina Bobovdol | Obshtina Bolyarovo |
| Obshtina Borino | Obshtina Borovan | Obshtina Borovo |
| Obshtina Botevgrad | Obshtina Boychinovtsi | Obshtina Boynitsa |
| Obshtina Bozhurishte | Obshtina Bratsigovo | Obshtina Bratya Daskalovi |
| Obshtina Bregovo | Obshtina Breznik | Obshtina Brezovo |
| Obshtina Brusartsi | Obshtina Buk’ovtsi | Obshtina Burgas |
| Obshtina Byala | Obshtina Byala Slatina | Obshtina Chavdar |
| Obshtina Chelopech | Obshtina Chepelare | Obshtina Chernoochene |
| Obshtina Cherven Bryag | Obshtina Chervena Zvezda | Obshtina Chiprovtsi |
| Obshtina Chirpan | Obshtina Chuprene | Obshtina Dŭlgopol |
| Obshtina Devin | Obshtina Devnya | Obshtina Dimitrovgrad |
| Obshtina Dimitrovo | Obshtina Dimovo | Obshtina Dobrich |
