Abbreviations beginning with O

OPOSTOlder Persons Outreach and Support Team (Southampton General Hospital, UK)
Academic & Science

OPOTOld Post Office Tower (US National Park Service)
Governmental

OPOTAOhio Peace Officer Training Academy
Miscellaneous

OPOTCOhio Peace Officer Training Commission
Governmental » State & Local

OPOVOxidizer Preburner Oxidizer Valve (space shuttle engine component)
Academic & Science

OPOVOxidizer Preburner Oxidizer Valve
Governmental » NASA

OPOVIGOmnibenevolent Polyfather of Virginity in Gold (Title of Malaclypse the Younger, High Priest of the POEE)
Miscellaneous

OPOYOffensive Player Of the Year
Miscellaneous » Unclassified

OPOYOnline Player of the Year (poker award)
Miscellaneous

OPOZOnderzoekscentrum Preventie Overgewicht Zwolle (Dutch: Zwolle Overweight Prevention Research)
Miscellaneous

OPOZOpenbaar Primair Onderwijs Zaanstad (Polish: Public Primary Education Zaanstad; Zaanstad, Netherlands)
Miscellaneous

OPPObject Push Profile (Bluetooth)
Academic & Science

OPPOffice of Polar Programs (National Science Foundation)
Academic & Science

OPPOffice of Polar Programs at the National Science Foundation
Academic & Science » Meteorology