| Osteit | Osteitis deformans | Ostel |
| Ostelbien | Ostelius, Hans | Ostellato |
| Ostellidae | Ostelsheim | Ostelucum |
| Osten | Osten, Emil van der | Osten, Niedersachsen |
| Osten, Suzanne | Osten-Sacken, Bernhard von der | Ostend |
| Ostend (olika betydelser) | Ostend Airport | Ostend-Bruges International Airport |
| Ostende | Ostende-kompaniet | Ostendekompaniet |
| Ostendemanifestet | Ostendkompaniet | Ostenf. |
| Ostenf. (auktor) | Ostenfeld | Ostenfeld (Husum) |
| Ostenfeld (Rendsburg) | Ostenfeld Gletscher | Ostenfeld, Asger |
| Ostenfeld, Carl Hansen | Ostenfeld, Harald | Ostenfelds ögontröst |
| Ostenia | Ostenia robusta | Ostenia uruguayensis |
| Ostens hus | Ostension | Ostensiv definition |
| Ostenso | Ostenso, Mount | Ostensorium |
| Ostentator punctipennis | Osteoalgi | Osteoarkeologi |
| Osteoarkeologiska forskningslaboratoriet | Osteoartrit | Osteoartros |
| Osteoblast | Osteoblaster | Osteobrama |
| Osteobrama alfrediana | Osteobrama alfredianus | Osteobrama bakeri |
| Osteobrama belangeri | Osteobrama bheemensis | Osteobrama bhimensis |
| Osteobrama brevipectoralis | Osteobrama cotio | Osteobrama dayi |
| Osteobrama feae | Osteobrama microlepis | Osteobrama neilli |
| Osteobrama ogilbii | Osteobrama rapax | Osteobrama vigorsii |
| Osteocarpum | Osteocarpum acropterum | Osteocarpum dipterocarpum |
| Osteocarpus brevifolius | Osteocarpus clavatus | Osteocarpus foliolosus |
| Osteocarpus lepidophyllus | Osteocarpus rostratus | Osteocarpus spathulatus |
| Osteocephalus | Osteocephalus alboguttatus | Osteocephalus buckleyi |
| Osteocephalus cabrerai | Osteocephalus carri | Osteocephalus deridens |
| Osteocephalus elkejungingerae | Osteocephalus exophthalmus | Osteocephalus fuscifacies |
| Osteocephalus heyeri | Osteocephalus langsdorffii | Osteocephalus leoniae |
| Osteocephalus leprieurii | Osteocephalus mutabor | Osteocephalus oophagus |
| Osteocephalus pearsoni | Osteocephalus phasmatus | Osteocephalus planiceps |
| Osteocephalus subtilis | Osteocephalus taurinus | Osteocephalus verruciger |
| Osteocephalus yasuni | Osteocheilus brevidorsalis | Osteocheilus godavariensis |
| Osteocheilus malabaricus | Osteocheilus nashii | Osteocheilus thomassi |
| Osteochilichthys | Osteochilichthys brevidorsalis | Osteochilichthys godavariensis |
| Osteochilichthys longidorsalis | Osteochilichthys nashii | Osteochilichthys thomassi |
| Osteochilus | Osteochilus bellus | Osteochilus bleekeri |
| Osteochilus borneensis | Osteochilus brachynotopteroides | Osteochilus brachynotopterus |
| Osteochilus brevicauda | Osteochilus brevidorsalis | Osteochilus chalybeatus |
| Osteochilus chini | Osteochilus duostigma | Osteochilus enneaporos |
| Osteochilus enneaporus | Osteochilus flavicauda | Osteochilus godavariensis |
| Osteochilus harrisoni | Osteochilus hasselti | Osteochilus hasseltii |
| Osteochilus ingeri | Osteochilus intermedius | Osteochilus jentinki |
| Osteochilus jentinkii | Osteochilus jeruk | Osteochilus kahajanensis |
| Osteochilus kalabau | Osteochilus kappenii | Osteochilus kelabau |
| Osteochilus kerinciensis | Osteochilus kuekenthali | Osteochilus kuhlii |
| Osteochilus lini | Osteochilus longidorsalis | Osteochilus macrosemion |
| Osteochilus malabaricus | Osteochilus malanopleurus | Osteochilus melanopleura |
| Osteochilus melanopleurus | Osteochilus melanopterus | Osteochilus microcephalus |
| Osteochilus nashii | Osteochilus neilli | Osteochilus ochrus |
| Osteochilus oligolepis | Osteochilus partilineatus | Osteochilus pentalineatus |
| Osteochilus pleurotaenia | Osteochilus prosemion | Osteochilus repang |
| Osteochilus salsburi | Osteochilus salsburyi | Osteochilus sarawakensis |
| Osteochilus scapularis | Osteochilus schlegeli | Osteochilus schlegelii |
| Osteochilus serokan | Osteochilus simus | Osteochilus sondhii |
| Osteochilus soplaoensis | Osteochilus spilopleura | Osteochilus spilulus |
| Osteochilus spilurus | Osteochilus striatus | Osteochilus tatumi |
| Osteochilus thomassi | Osteochilus tripore | Osteochilus triporos |
| Osteochilus triporus | Osteochilus vittatoides | Osteochilus vittatus |
| Osteochilus waandersi | Osteochilus waandersii | Osteoclast |
| Osteocyt | Osteoderm | Osteodes |
| Osteodes eritreensis | Osteodes exumbrata | Osteodes fumida |
| Osteodes latimarginaria | Osteodes pervittata | Osteodes procidata |
| Osteodes semispurcata | Osteodes turbulenta | Osteodes turbulentata |
| Osteodes warreni | Osteodiscus | Osteodiscus andriashevi |
| Osteodiscus cascadiae | Osteogeneiosus | Osteogeneiosus blochii |
| Osteogeneiosus cantoris | Osteogeneiosus gracilis | Osteogeneiosus ingluvies |
| Osteogeneiosus longiceps | Osteogeneiosus macrocephalus | Osteogeneiosus miliataris |
| Osteogeneiosus militaris | Osteogeneiosus sthenocephalus | Osteogeneiosus valenciennesi |
| Osteogenesis imperfecta | Osteoglossidae | Osteoglossiformes |
| Osteoglossum | Osteoglossum arowana | Osteoglossum bicirrhostum |
| Osteoglossum bicirrhosum | Osteoglossum ferreirai | Osteoglossum ferrerai |
| Osteoglossum guntheri | Osteoglossum jardinii | Osteoglossum minus |
| Osteoglossum prionostoma | Osteoglossum vandelli | Osteoid |
| Osteoklast | Osteoklaster | Osteokondropati |
| Osteokondros | Osteolaemus | Osteolaemus tetraspis |
| Osteolepiformes | Osteolog | Osteologi |
| Osteologisk | Osteologiska föreningen | Osteomalaci |
| Osteomeles | Osteomeles anthyllidifolia | Osteomeles anthyllidifolia f. subrotunda |
| Osteomeles anthyllidifolia var. subrotunda | Osteomeles anthyllifolia | Osteomeles boninensis |
| Osteomeles chinensis | Osteomeles cuneata | Osteomeles iatifolia |
| Osteomeles pernettyoides | Osteomeles resinosopunctata | Osteomeles schwerinae |
| Osteomeles subrotunda | Osteomorpha | Osteomorpha fragilis |
| Osteomyelit | Osteon | Osteonekros |
| Osteopat | Osteopati | Osteopati (alternativmedicin) |
| Osteopati (behandlingsform) | Osteopelta | Osteopelta mirabilis |
| Osteopelta praeceps | Osteopeltidae | Osteopeni |
| Osteopetros | Osteophloeum | Osteophloeum platyspermum |
| Osteopilus | Osteopilus brunneus | Osteopilus crucialis |
| Osteopilus dominicensis | Osteopilus marianae | Osteopilus pulchrilineatus |
| Osteopilus septentrionalis | Osteopilus vastus | Osteopilus wilderi |
| Osteoporos | Osteosarkom | Osteosema |
| Osteosema albiviridis | Osteosema albotermina | Osteosema alboviridis |
| Osteosema benguetensis | Osteosema discata | Osteosema pastor |
| Osteosema praeampla | Osteosema sanguilineata | Osteospermum |
| Osteosyntes | Oster | Oster Kippinge |
| Oster Ulslev | Oster, Hans | Oster, Nicolaus |
| Oster-Ohrstedt | Ostera | Osteröy |
| Osterøy | Osterøy (ö) | Osterøy kommun |
| Osterberg | Osterbergen | Osterbruch |
