Companies catalogue
- O ' Farm, Sha Tin Wai
- O 'Farm, Ngau Chi Wan
- O Veg, Kam Tin
- O' Farm, Lam Tin
- O' Farm, Sheung Shui
- O'Farm, Tsing Yi
- O'Farm 綠盈坊 (香港仔店), Aberdeen
- O'Farm 綠盈坊有機店 (何文田愛民分店), Ho Man Tin
- O'Farm 綠盈坊有機店 (屯門良景分店), Tuen Mun
- O'Farm 綠盈坊有機店 (慈雲山分店), Tsz Wan Shan
- O'Farm 綠盈坊有機店 (旺角海富分店), Mong Kok
- O'Farm 綠盈坊有機店 (秀茂坪分店), Sau Mau Ping
- O.TAGON HAIR STUDIO, Causeway Bay
- OH Food Arabic Halal Cuisine, Wan Chai
- OKRA Hong Kong, Sai Ying Pun
- OM Tapas, Tsim Sha Tsui
- ONC Lawyers, Central
- OP Investment Management Limited, Central
- OPP (FRANCE) INTERNATIONAL TRADE CO., LIMITED, North Point
- ORIENT GROUP HK Ltd., Sheung Wan
- OT&P Clearwater Bay Medical Clinic, Clear Water Bay
- OT&P Repulse Bay Medical Clinic, Repulse Bay
- OT&P Wanchai Medical Clinic, Wan Chai
- OVO Home, Ap Lei Chau
- OZO Hotel, Wan Chai
- Oasis Education Centre (Evening School), Mong Kok
- Ocean Angel For Translation Services Hk Ltd, Tsim Sha Tsui
- Ocean Grill, Central
- Ocean Tai Foods Co Ltd, 灣仔
- Ocean Terminal Car Park, Tsim Sha Tsui
- Ocean Three 生蠔 (Tsuen Wan), Tsuen Wan
- Octal Capital Limited, Central
- Octopus Merchant service, Causeway Bay
- Oddle (Hong Kong) Limited, Sheung Wan
- Odelice!, Wan Chai
- Odgers Berndtson, Central
- Office of Cllr. Andrew CHIU (趙家賢議員辦事處), Shau Kei Wan
- Office of Tuen Mun District Council Member Lung Kang Sang, Tuen Mun
- Office of the Commissioner of the Ministry of Foreign Affairs of PRC in HKSAR, Mid-level
- Offline Lab, 55
- Oh! Massage Genius 按摩館, Central
- Oh! My Dog!, Shek Lei
- Oi Tung Estate, Aldrich Bay
- Okada Law Firm (Hong Kong), Central
- Old Beijing Restaurant, Wan Chai
- Old District Office North, Tai Po
- Old House - Hoi Pa Village, Tsuen Wan
- Oldham, Li & Nie, Central
- Ole Spanish Restaurant, Hong Kong
- Oliver's Super Sandwiches, Kowloon Tong
- Oma's Kitchen, Ma Wan
- Omerice, Tin Hau
- On Ching Road Flower Market, Hung Hom Bay
- On Ting Estate, Tuen Mun
- On Your Mark Design Laboratory, Kowloon Tong
- On-Street Motorcycle Parking Spaces, Tong Mi
- On-Street Motorcycle Parking Spaces, Lam Tin
- On-Yasai, Causeway Bay
- On-Yasai, Tsim Sha Tsui
- OnTheList, Central
- Onco Medical Laboratory Ltd, Central
- Onco Medical Laboratory Ltd, Cheung Sha Wan
- One Canteen Bistro cityfresh gourmet, Kowloon City
- One Dundas Serviced Apartments, Mong Kok
- One Eleven, Sai Ying Pun
- One International Finance Centre Car Park, Central
- One SilverSea, Tai Kok Tsui
- One Stop English, Tai Kok Tsui
- Oolaa, Sheung Wan
- Open Heart Dojo_sheung Wan, Sheung Wan
- Open Kitchen, Central
- Open Kitchen 煮場, Tsing Yi
- Open Smoke Hong Kong, London
- Oppa Takeaway, Central
- Optiver Trading HK Ltd, Central
- Orange Peel, Central
- Orange Tree, Central
- Orchid Inn, Yau Ma Tei
- Orchid Lodge, 沙田
- Orient Unlimited Ltd, Wong Chuk Hang
- Oriental Bridal Design Studio, Tsim Sha Tsui
- Oriental Engineering Co Ltd, Tai Wan
- Oriental Fusion, Cheung Chau
- Oriental Martial Arts - Tsim Sha Tsui, Tsim Sha Tsui
- Oriental Tech Executive Search Consultants, Wan Chai
- Original Taste Workshop, Tung Chung
- Osia International, Tsim Sha Tsui
- Osmosis Wellness (Hong Kong) Ltd, Kwai Chung
- Otaru Izakaya, To Kwa Wan
- Otaru Japanese School, Tsuen Wan
- Oui, Sheung Wan
- Our Lady of Maryknoll Hospital, Chuk Un
- Our Restaurant, Mong Kok
- Outblaze Limited, Causeway Bay
- Outdark Korean Restaurant辣炒春雞, Tsim Sha Tsui
- Overseas Employment Centre Ltd-Tsuen Wan, Hong Kong
- Ovolo Sheung Wan, Tai Ping Shan
- Oyster Group Limited, Kowloon Bay
- Ozawa, Central
- oneCHARGE Solutions Limited, Kwai Chung