Australia Abbreviations and Acronyms
- OMSEEOnline Management of School Entitlements and Enrolments
- ONGMornington Island, Queensland, Australia
- ONRMonkira, Queensland, Australia
- ONRSROffice Oflthe National Rail Safety Regulator
- ONSOnslow, Western Australia, Australia
- ONUOrganisation Des Nations Unies
- OOHCOut-Of-Home Care
- OOLGold Coast Airport
- OOLGold Coast Airport, Coolangatta, Queensland, Australia
- OOMCooma Snowy Mountains, Cooma, Australia
- OORMooraberree, Australia
- OOSHOut of School Hours Centre
- OPAOffice of The Public Advocate
- OPAOfficial Public Account
- OPALObesity Prevontion and Lifestyle
- OPALOpen Pool Australian Lightwater
- OPALOpen Pool Australian Light-Water
- OPCOffice of Parhiamentary Counsel
- OPCOrthotic & Prosthetic Cenmre
- OPCATOptional Protocol On The Convention Against Torture
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