Institution
- OMI Corporation1
- Obama’s President’s Council of Advisors on Science and Technology (OPCAST)1
- Oberlin College1
- Obihiro Chikusan Daigaku1
- Occidental Chemical Corporation1
- Occidental College1
- Odense universitet1
- Ohio Northern University1
- Ohio State University. Comprehensive Cancer Center1
- Oklahoma State University at Stillwater1
- Oncogene Science1
- Online Computer Library Center, Incorporated1
- Operations Research, Inc.1
- Opportunities Industrialization Center (Philadelphia, Pa.)1
- Oregon State College1
- PAMETRADA Research Station1
- PASA Petroquimica Argentina1
- Pacific Gas and Electric Company1
- Pacific Semiconductors, Inc. 1
- Palais de la découverte (Paris, France)1