Abbreviations beginning with o

OSSWOperations Support Systems Wing (US Air Force)
Governmental

OSSWOhio Statewide Science Workshop
Miscellaneous

OSSWOn the Same Stone With (transcribing headstones for genealogical work)
Miscellaneous

OSSWOrganization of Student Social Workers (various schools)
Miscellaneous

OSSWOutstate Seller of Wine (Michigan)
Miscellaneous

OSSWCCOntario Social Service Workers Coordinating Committee (Canada - Labour Union)
Miscellaneous

OSSWGOperating Systems Standards Working Group
Community

OSSWGOffice System Standards Work Group
Computing » IT

OSTObservational Sequence Table
Academic & Science

OSTObservatoire des Sciences et Techniques (French: science and technology observatory)
Academic & Science

OSTOdonata Survey of Texas
Academic & Science

OSTOffice of Science and Technology
Academic & Science » Ocean Science

OSTOpen Source Technologies (various locations)
Academic & Science

OSTOpen Storage (software)
Academic & Science

OSTOpioid Substitution Therapy (drug dependency)
Academic & Science