| OMEGA OPTIKAL |
| OMEGA PHARMA GROUP |
| OMEGA SERVICE |
| OMEGA STUDIO |
| OMER - FRUIT |
| OmniSystem 3D |
| OMNIVERSE |
| ON FILM PRODUCION |
| On The Run Boxing |
| ONDER MURAT DELIALIOGU |
| ONE ALBANIA |
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| One Gift |
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| Oneda Peti |
| ONES |
| Oni Gjini |
| ONI TRADE |
| ONI(J66902008N) |
| ONID INTERKLUB |
| ONIRIK SHPK |
| ONIS |
| Online Marketing Academy (OMA) |
| ONLINE NOW |
| ONSI PLAST |
| ONUFRI |
| ONUFRI - HOTEL |
| ONUZI |
| ONYX |
| OPEN DOORS FOR ALBANIAN YOUTHS |
| OPEN LAVANTERI |
| Open Source Academy |
| OPENPAY |
| OPENTECH CONSULTING & SERVICES |
| OPENTECH CONSULTING - SERVICES |
| OPENTEX |
| OPERA DIVINA PROV. MADONNINA D. GRAPA |
| Operatori i Blerjeve të Përqëndruara |
| OPERATORI I SHPERNDARJES SE ENERGJISE ELEKTRIKE |
| OPERATORI I SISTEMIT TE SHPERNDARJES |
| OPERATORI SISTEMIT TRANSMETIMIT OST |
| Optima Albania |
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| OPTIMAL CENTER |
| OPTIMUM 3 |
| OPTIO SHPK |
| OPTIX GROUP |
| Optixcom |
| ORA (K71505003O) |
| ORA FILM |
| Ora News |
| ORALIBRARI |
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| Orbelin Milo |
| Orbis Travel |