| Nimi | Paikkakunta |
|---|---|
| OREMA | Helsinki |
| ORGANISAATIODYNAMIIKKA RY | Helsinki |
| Organized Chaos Videos Ky | Helsinki |
| Orgtronic Systems | Helsinki |
| Oribi Oy | Helsinki |
| Orient Import Oy | Helsinki |
| Orient Magazine | Helsinki |
| Oriental Dance Bazar Tmi Jaana Havia | Helsinki |
| Oriental International Developing Oy | Helsinki |
| ORIENTAL TRANSLATIONS | Helsinki |
| OrientalInfo Oy | Helsinki |
| origami grafik | Helsinki |
| Origine Ky | Helsinki |
| Origins Media Oy | Helsinki |
| Origo Innovations Oy | Helsinki |
| Orimattilan lakiapu | Helsinki |
| ORM Palvelut Oy | Helsinki |
| Ornare | Helsinki |
| Oros Daniel Arts | Helsinki |
| Oros Elina Maria | Helsinki |
| Orpheus North Architects | Helsinki |
| OrsaCoach Oy | Helsinki |
| ORTHO R-MED | Helsinki |
| Orthonova Oy | Helsinki |
| Ortocor Ky | Helsinki |
Yritysesittely