List of companies
- Orrussey Center
- Oxley Worldbridge Specialized Bank Plc.
- OP Computer Technology
- ocic
- Oskar Bistro
- OSTRO Bistro & Lounge
- Oriental Logistics & Distribution (Cambodia) Co., Ltd
- Oligo Trading Co., LTD.
- opennet
- Office Express
- Optimum Machinery (Cambodia) Co., Ltd
- One Part Auto Co.,Ltd
- One360
- One big tree
- Office Express Co., Ltd.
- OS INT Inc.
- Octopus Asia Pacific Cambodia Limited
- OT Footwear Cambodia
- Opennet Cambodia
- Opennet
- OUTtel
- opennet SR
- One More Restaurant
- Orkide Villa
- ORUSSEY CENTER
- Okay Boutique Hotel
- Opennet
- ORUSSEY CENTER
- Okoone
- Opinion Outpost
- ORKIN CAMBODIA
- Okra Restaurant
- Orchard Fox
- Olib Resource Trading Co., Ltd
- Opennet Cambodia
- Olympia City
- O and M (Cambodia) Co., Ltd
- Oxley Worldbridge (Cambodia) Co.,Ltd
- Organic Village Chickens
- OSTRO Bistro & Lounge
