| Organization XIII | Organization XIII |
| organoleptisk egenskap | organoleptic property |
| organskada | lesion |
| orgasm | orgasm |
| orgel | barrel organ |
| Orgelbössa | Ribauldequin |
| Orgelpipekaktusar | Stenocereus |
| Orgelsymfoni | Organ Symphony |
| Orges | Orges |
| orgiastisk | orgiastic |
| orgie | bacchanal |
| Orhan | Orhan I |
| Orhan Pamuk | Orhan Pamuk |
| Orhei | Orhei |
| Orhei rajon | Raionul Orhei |
| Oriana Fallaci | Oriana Fallaci |
| Oribi | Oribi |
| Oric Atmos | Tangerine Computer Systems |
| oriental | Oriental |
| orientalisk | oriental |
| Orientalisk dans | Belly dance |
| Orientalisk klockgroda | Oriental Fire-bellied Toad |
| orientaliska | Oriental |
| Orientaliskt korthår | Oriental Shorthair |
| Orientaliskt långhår | Oriental Longhair |
| Orientaliskt ortodoxa | Oriental Orthodoxy |
| orientalist | orientalist |
| Oriente | Oriente |
| Orienten | Orient |
| orientera | orientate |
| orientera sig | orientate |
| orienterad | oriented |
| orientering | briefing |
| orienteringspunkt | landmark |
| Orientexpressen | Orient Express |
| Oriflame | Oriflame |
| origami | origami |
