Companies catalogue
- O Veggie, Fo Tan
- O'Learys, Lantau
- O'garlic Fine Gourmet, Central
- O2 HAIR STUDIO HONG KONG, Central
- OCBC Wing Hang Bank, Yau Ma Tei
- OCEAN ART 海洋創作畫室, Mong Kok
- OCEANHBHK, Sham Shui Po
- ODD ONE OUT, Hong Kong
- ODU, Kwun Tong
- OEDO Japanese Restaurant, North Point
- OEE501, Oen Hall, Hong Kong Baptist University, Beacon Hill
- OMG Kitchen, Kwun Tong
- OMT-Veyhl Asia Ltd, Tuen Mun
- OS Oyster & Steakhouse, Tsim Sha Tsui
- OSIM, Causeway Bay
- OWNA GROUP INTERNATIONAL LIMITED, Cheung Sha Wan
- Occupational Safety Service - Technical Support Unit, Central
- Oce (Hong Kong China) Limited, Kwun Tong
- Ocean Muay Thai & Fitness, 元朗
- Ocean Park, Wong Chuk Hang
- Ocean Park Emerald Trail, Ocean Park
- Ocean Park Thrill Mountain, Ocean Park
- Ocean Professional Waterproofing Company Limited, Kowloon Bay
- Ocean Rock Seafood & Tapas, Stanley
- Ocean Three 生蠔 (Mong Kok), Hong Kong
- Ocean Three 生蠔 (Tuen Mun), Hong Kong
- Ocean Treasure Seafood Restaurant, Shek Yam
- Ocean fur company limited 海洋皮草, Tsim Sha Tsui
- Oceangogo Company LTD, 屯門
- Oceanus 生蠔環球高級食材, Lai Chi Kok
- Oceanwide Securities Company Limited, Central
- Octagon Strategy Limited, Wan Chai
- Oddity Studio, Sheung Wan
- Office of Service-Learning Lingnan University, 屯門
- Office of Yan Kallen, Happy Valley
- OfficeEarth - Virtual Receptionist Service 24/7, Wan Chai
- Oh Sushi, Telegraph Bay
- Oi Kwan Restaurant, Om Yau
- Oi Suen Guesthouse, Mong Kok
- Oi!, North Point
- Okashi Galleria, Wan Chai
- Old Hong Kong, Ocean Park
- Oliver's the Delicatessen, Central District
- On Chit Street Soccer Pitch, Kwai Chung
- On Yam Estate, Kwai Chung
- On-Street Motorcycle Parking Spaces, Sai Wan
- On-Street Motorcycle Parking Spaces, Tung Chung
- On-Street Motorcycle Parking Spaces, Kennedy Town
- On-Street Motorcycle Parking Spaces, Tai Mo Shan
- On-Street Motorcycle Parking Spaces, Chuk Un
- On-Street Motorcycle Parking Spaces, San Po Kong
- On-Street Motorcycle Parking Spaces, Tai Wai
- On-Street Motorcycle Parking Spaces, Tai Hom
- One Dim Sum, Prince Edward
- One Harbour Road at Grand Hyatt Hong Kong, Wan Chai
- One Primitive Concept Limited, San Po Kong
- One Theory, Mong Kok
- One Zebra Limited, Kwai Chung
- OneStart Business Centre, Causeway Bay
- OneStart Business Centre (Lai Chi Kok) - 壹達商務中心 (荔枝角總行), Lai Chi Kok
- OneStart Business Centre - 壹達商務中心 (Kwun Tong - 觀塘), Kwun Tong
- OneStart Business Centre壹達商務中心 (Central - 中環分行), Central
- Onereddot Fine Wines, Tsuen Wan
- Onestop, 尖沙咀
- Oolaa Petite, 灣仔
- Ootoya, Quarry Bay
- Opera Gallery Hong Kong, Central
- Oppa korean restaurant, Mong Kok
- Optical 88, Tuen Mun
- Optometrist Chan & Partners Ltd., Sha Tin
- Opus Hong Kong, Mount Cameron
- Orange Translations Ltd., Central
- Orangetheory Fitness - Causeway Bay, Causeway Bay
- Orbitron, Hong Kong Disneyland Resort
- Orchid Padaria Bakery, Tuen Mun
- Orchid Padaria Bakery, Sheung Wan
- Orchid Veggie 若蘭慈素食, Sai Wan
- Ord Minnett Hong Kong, Central
- Organic Life 有機生活, Mong Kok
- Orient Exchange Company (HK) Limited, Sha Tin
- Orient Guest House, Jordan
- Orient Mark Certified Public Accountants, North Point
- Orient Occident Atelier | OOA | 東西建築, Wan Chai
- Oriental Lander Hotel, Mong Kok
- Oriental Patron Securities Ltd, Central
- Oriental Veterinary Clinic (Tuen Mun), Tuen Mun
- Original Taste Workshop, Yuen Long
- Osage Gallery, Kwun Tong
- Oscar, Causeway Bay
- Oui Oui Bistro, 長沙灣
- Outdoor Soccer Pitch, Tung Chung
- Overgaard Ltd., Wan Chai
- Oxfam Hong Kong, 北角
- Oyster & Wine Bar, Tsim Sha Tsui
- Oyster Cove, North Point
- Oyster Season, Yuen Long
- Oyster Station, Tai Kok Tsui
- Oyster Station Snack & Oyster Bar, Ma Tau Chung
- Ozone Fitness, Wan Chai
- office 102, Tai Kok Tsui