Alphabetical company index for letter/character "O", page 15 of 22
- Orbital ATK Inc.
- Orbital Sciences Corp.
- Orbite Aluminae Inc
- Orbitz Worldwide Inc.
- Orbotech Ltd.
- Orcas Island School District
- Orchard Elementary School District
- Orchard Farm R-V
- Orchard Hospital
- Orchard Park Central School District
- Orchard Prairie School District
- Orchard Supply Hardware
- Orchard View Schools
- Orchid Cellmark Inc.
- Orchid Island Capital Inc.
- Orchids Paper Products Inc.
- Orckit Communications Ltd.
- ORCS Web
- Orcutt Union Elementary School District
- Ord Public Schools
- Ore City Independent School District
- Ore Pharmaceuticals Inc.
- Orearville R-Iv School District
- Oregon
- Oregon City School District
- Oregon City School District 62
- Oregon County
- Oregon CUSD 220
- Oregon Institute of Technology
- Oregon School District
- Oregon State University
- Oregon Trail School District 46
- Oregon-Davis School Corporation
- Oregon-Howell R-Iii School District
- Orem Community Hospital
- Orexigen Therapeutics Inc.
- Orezone Gold Corp
- Orezone Resources Inc.
- Organic Laboratories
- Organix-South