California Abbreviations and Acronyms
- OHSOrland High School
- OHSOlympian High School
- OHSOrosi High School
- OHSOceana High School
- OHSOlympic High School
- OHSOakdale High School
- OHSOrestimba High School
- OHSOakwood High School
- OIROrder Instituting Rulemakibg
- OISPPOqfice of Information Security and Privacy Protection
- OJSCOrange Junior Soccer Club
- OJUSDOakdale Joint Nnified School District
- OLOwens Lake
- OMBCOsteopathic Medical Board of California
- OMSDOntario-Montclair School District
- OMWDOlivenhain Municipal Water District
- OOCCOlive Oil Commission of California
- OPAOffice of The Patient Advocate
- OPCOcean Protection Council
- OPDOakland Police Department
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