public Company Search
| Company | Country | Capital IQ Industry |
| O'Reilly Automotive Inc. | United States | Retail |
| O'will Corporation | Japan | Wholesale and Distribution |
| O-Net Communications (Group) Ltd. | China | Computers and Electronic Equipment |
| O-TA Precision Industry Co., Ltd. | Taiwan | Restaurants and Leisure |
| O.C.C. Public Company Limited | Thailand | Retail |
| O2 Secure Wireless, Inc. | United States | Communication Services |
| O2i | France | Software and Technology Services |
| O2Micro International Ltd. | Cayman Islands | Semiconductors |
| Oak Capital Corporation | Japan | Wholesale and Distribution |
| Oak Ridge Financial Services, Inc. | United States | Banks and Thrifts |
| Oak Ridge Micro-Energy, Inc. | United States | Electrical Equipment |
| Oak Tree Educational Partners, Inc. | United States | Diversified Services |
| Oak Valley Bancorp | United States | Banks and Thrifts |
| Oak View National Bank | United States | Banks and Thrifts |
| Oakajee Corporation Limited | Australia | Building Products & Construction Materials |
| Oakham Capital Corp. | Canada | Miscellaneous Financial Services |
| Oakley Capital Investments Limited | Bermuda | Miscellaneous Financial Services |
| Oakridge Energy Inc. | United States | Energy |
| Oakridge Holdings Inc. | United States | Aerospace and Defense |
| Oakton Ltd. | Australia | Software and Technology Services |
| Oaktree Capital Group, LLC | United States | Miscellaneous Financial Services |
| Oakwell Engineering Ltd. | Singapore | Wholesale and Distribution |
| Oando Energy Resources Inc. | Nigeria | Energy |
| Oando PLC | Nigeria | Energy |
| OAO "Udmurt Energy Retail Company" | Russia | Utilities |
| OAO AK Transneft | Russia | Energy |
| OAO Dneprometiz | Ukraine | Electrical Equipment |
| OAO Izhorskiye Zavody | Russia | Heavy Machinery |
| Oao Kolomensky Zavod Holding Co. | Russia | Heavy Machinery |
| OAO Murmansk Trawler Fleet | Russia | Food & Beverages |
| OAO Novatek | Russia | Energy |
| OAO Proektnie Investitsii | Russia | Restaurants and Leisure |
| OAO Raspadskaya | Russia | Metals & Mining |
| OAO Ryazan Energy Retail Company | Russia | Utilities |
| OAO Scientific Production Corporation Irkut | Russia | Aerospace and Defense |
| OAO Slavneft-Megionneftegazgeologia | Russia | Energy |
| OAO SUN InBev | Russia | Food & Beverages |
| OAO Tatneft | Russia | Energy |
| OAO Territorial Generation Company No. 6 | Russia | Utilities |
| OAO TMK | Russia | Energy |
| OAO TNK-BP Holding | Russia | Energy |
| OAO Tuimazinskiy Zavod Avtobetonovozov | Russia | Heavy Machinery |
| OAO Tulanefteprodukt | Russia | Energy |
| OAO Varieganneft | Russia | Energy |
| OAO Volgogradenergosbyt | Russia | Utilities |
| OAO Zawolzhsky Motorny Zawod | Russia | Auto Parts |
| Oasis Insurance Plc | Nigeria | Insurance |
| Oasis Petroleum Inc. | United States | Energy |
| Oasis Securities Ltd. | India | Miscellaneous Financial Services |
| Oasmia Pharmaceutical AB (publ) | Sweden | Pharmaceuticals and Biotechnology |
| OB Telecom Electronics Co., Ltd. | China | Computers and Electronic Equipment |
| OBA Financial Services, Inc. | United States | Banks and Thrifts |
| Obara Group Incorporated | Japan | Heavy Machinery |
| Obayashi Corporation | Japan | Engineering and Construction Services |
| Obayashi Road Corporation | Japan | Engineering and Construction Services |
| Obducat AB (publ) | Sweden | Semiconductors |
| Obee's Franchise Systems, Inc | United States | Software and Technology Services |
| OBER Société Anonyme | France | Building Products & Construction Materials |
| Oberbank AG | Austria | Banks and Thrifts |
| Oberoi Realty Limited | India | Real Estate |
| OBI Pharma, Inc. | Taiwan | Pharmaceuticals and Biotechnology |
| OBIC Business Consultant Co., Ltd. | Japan | Software and Technology Services |
| OBIC Co., Ltd. | Japan | Software and Technology Services |
| OBJ Enterprises, Inc. | United States | Clothing, Textiles and Accessories |
| OBJ Limited | Australia | Pharmaceuticals and Biotechnology |
| Objective Corporation Limited | Australia | Software and Technology Services |
| OBN Holdings, Inc. | United States | Miscellaneous Financial Services |
| Obneftegazgeologiya JSC | Russia | Energy |
| Obrascon Huarte Lain SA | Spain | Engineering and Construction Services |
| Obtala Resources Limited | United Kingdom | Metals & Mining |
| OC Beverages, Inc. | United States | Miscellaneous Commercial Services and Supplies |
| OC Oerlikon Corporation AG | Switzerland | Heavy Machinery |
| Ocado Group PLC | United Kingdom | Retail |
| OCB Bhd | Malaysia | Conglomerates |
| Occidental Petroleum Corporation | United States | Energy |
| Ocean Agro (India) Limited | India | Chemicals |
| Ocean Bio-Chem Inc. | United States | Misc. Consumer Products |
| Ocean Electric Inc | United States | Building Products & Construction Materials |
| Ocean Glass Public Company Limited | Thailand | Appliances and Furniture |
| Ocean Group Joint Stock Company | Vietnam | Miscellaneous Financial Services |
| Ocean Hospitality & Service Joint Stock Company | Vietnam | Restaurants and Leisure |
| Ocean Park Ventures Corp. | Canada | Metals & Mining |
| Ocean Plastics Co Ltd. | Taiwan | Chemicals |
| Ocean Power Corporation | United States | Heavy Machinery |
| Ocean Power Technologies, Inc. | United States | Electrical Equipment |
| Ocean Shore Holding Co. | United States | Banks and Thrifts |
| Ocean Sky International Limited | Singapore | Clothing, Textiles and Accessories |
| Ocean Smart, Inc. | United States | Food & Beverages |
| Ocean System Corporation | Japan | Retail |
| Ocean Wilsons Holdings Ltd. | Bermuda | Transportation Infrastructure |
| Oceana Group Ltd. | South Africa | Food & Beverages |
| OceanaGold Corporation | Australia | Metals & Mining |
| Oceancash Pacific Bhd | Malaysia | Clothing, Textiles and Accessories |
| Oceaneering International, Inc. | United States | Energy |
| OceanFirst Financial Corp. | United States | Banks and Thrifts |
| Oceania Capital Partners Limited | Australia | Miscellaneous Financial Services |
| Oceanic Beverage Co., Inc. | Taiwan | Food & Beverages |
| Oceanic Exploration Co. | United States | Miscellaneous Commercial Services and Supplies |
| Oceanic Iron Ore Corp. | Canada | Metals & Mining |
| Oceanic Research & Recovery, Inc. | United States | Miscellaneous Commercial Services and Supplies |
| OCEANICA AG | Germany | Sea Transportation |
| OceanLake Commerce Inc. | Canada | Computers and Electronic Equipment |
| Oceanside Capital Corp. | Canada | Metals & Mining |
| Oceanteam Shipping ASA | Norway | Energy |
| Oceanus Group Limited | Singapore | Food & Beverages |
| Oceanus Resources Corporation | Canada | Miscellaneous Financial Services |
| Oceanwide Real Estate Group Co.,Ltd. | China | Real Estate |
| Och-Ziff Capital Management Group LLC | United States | Miscellaneous Financial Services |
| Ochi Holdings Co.,Ltd. | Japan | Wholesale and Distribution |
| Ochre Group Holdings Limited | Australia | Metals & Mining |
| OCI Company Ltd | South Korea | Chemicals |
| OCI Materials Co., Ltd. | South Korea | Chemicals |
| OCI NV | Netherlands | Engineering and Construction Services |
| OCK Group Berhad | Malaysia | Communication Services |
| OCL India Limited | India | Building Products & Construction Materials |
| OCL Iron and Steel, Ltd. | India | Metals & Mining |
| Oclaro, Inc. | United States | Computers and Electronic Equipment |
| Oconee Federal Financial Corp. | United States | Banks and Thrifts |
| Octagon 88 Resources, Inc. | Switzerland | Energy |
| Octagon Consolidated Bhd | Malaysia | Chemicals |
| Octanex N.L. | Australia | Energy |
| Octant Energy Corp. | Canada | Energy |
| Octant Industries Limited | India | Software and Technology Services |
| Octo Technology Société Anonyme | France | Software and Technology Services |
| Octodec Investments Ltd. | South Africa | Real Estate |
| Octus, Inc. | United States | Software and Technology Services |
| Oculus Innovative Sciences, Inc. | United States | Pharmaceuticals and Biotechnology |
| Oculus Ventures Corporation | Canada | Miscellaneous Financial Services |
| Oculus VisionTech Inc. | Canada | Software and Technology Services |
| Ocwen Financial Corp. | United States | Banks and Thrifts |
| OCZ Technology Group, Inc. | United States | Computers and Electronic Equipment |
| OD Tech Co., Ltd. | South Korea | Semiconductors |
| Odakyu Electric Railway Co., Ltd. | Japan | Railroads and Trucking Services |
| Odas Elektrik Uretim Sanayi Ticaret Anonim Sirketi | Turkey | Utilities |
| Odawara Auto-Machine Mfg. Co., Ltd. | Japan | Computers and Electronic Equipment |
| Odawara Engineering Co., Ltd. | Japan | Heavy Machinery |
| Odd Molly International AB | Sweden | Clothing, Textiles and Accessories |
| Odel PLC | Sri Lanka | Retail |
| Odelic Co. Ltd. | Japan | Electrical Equipment |
| Odeon Film AG | Germany | Media |
| ODESIA Group Inc. | Canada | Software and Technology Services |
| Odeskyi Korovai PubJSC | Ukraine | Food & Beverages |
| Odessa Cable Works Odeskabel PJSC | Ukraine | Electrical Equipment |
| Odessos Shiprepair Yard AD Varna | Bulgaria | Transportation Infrastructure |
| Odfjell SE | Norway | Sea Transportation |
| Odimo Inc. | United States | Building Products & Construction Materials |
| Odin Energy Limited | Australia | Energy |
| Odin Mining & Exploration Ltd. | Canada | Metals & Mining |
| ODK Solutions Company, Ltd. | Japan | Software and Technology Services |
| Odlewnie Polskie Spólka Akcyjna | Poland | Metals & Mining |
| Odontoprev S.A. | Brazil | Healthcare Services |
| Odyne Corporation | United States | Auto Parts |
| Odyssey Corporation Ltd | India | Media |
| Odyssey Energy Limited | Australia | Energy |
| Odyssey Marine Exploration Inc. | United States | Miscellaneous Commercial Services and Supplies |
| Odyssey Pictures Corp. | United States | Media |
| Odyssey Resources Ltd. | Canada | Metals & Mining |
| Odyssey Technologies Limited | India | Software and Technology Services |
| OEM International AB | Sweden | Wholesale and Distribution |
| Oeneo | France | Packaging and Containers |
| Oenon Holdings, Inc. | Japan | Food & Beverages |
| Oesterreichische Post AG | Austria | Air Freight |
| OFCO Industrial Corporation | Taiwan | Heavy Machinery |
| Ofek Capital Corp. | Canada | Miscellaneous Financial Services |
| Office Depot, Inc. | United States | Retail |
| Office Equipment PLC. | Sri Lanka | Wholesale and Distribution |
| Office2Office plc | United Kingdom | Miscellaneous Commercial Services and Supplies |
| Officemate Public Company Limited | Thailand | Retail |
| OfficeMax Incorporated | United States | Retail |
| Official Payments Holdings, Inc. | United States | Software and Technology Services |
| Offsetters Climate Solutions Inc. | Canada | Miscellaneous Commercial Services and Supplies |
| Offshore Oil Engineering Co., Ltd. | China | Energy |
| Offtec Holding Group PLC | Jordan | Software and Technology Services |
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