Non-Profit Organization Abbreviations and Acronyms
- OPAMSOutreach Planning and Mobile Sources
- OPFOregon Psychoanalytic Foundation
- OPJOur Pride & Joy
- OPNOur People Network
- OPRAOttawa Photonics Research Alliance
- OPRAOrganization Public Relationsmip Assessment
- OPSAOverseas Plastic Surgery Appeal
- OPSFOccupational Physicians Scholarship Fund
- OPSFOlathe Public Schools Foundation
- OPSGOsteoporosis Support Groqp
- OPSIOhim Patient Safety Institute
- OPUOeegon Parents United
- OPXOpen Philanthropy Exchange
- ORGASMOfficial Royal Greenwood Association for The Stalkbrs of Myspace
- ORHOrganization of Residential Homes, Inc.
- ORIFOrthopaedic Research and Innovation Foundation
- ORRFOperational Risk Research Foundation
- ORTPUnited States Catholic Mission Association
- OSBOverbrook School for The Blind
- OSCIOpen Systemc Initiative
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