Abbreviations beginning with r

RIVRegistrar of Imported Vehicles
Governmental » Transportation

RIVRegistrar of Imported Vehicles (Transport Canada; also seen as RVI)
Governmental

RIVRijks Instituut voor de Volksgezondheid (Dutch: National Institute for Health; now Rijksinstituut voor Volksgezondheid en Milieu)
Governmental

RIVRallye International du Valais
Miscellaneous » Unclassified

RIVRallye International du Valais (French: International Rally of Valais; Switzerland)
Miscellaneous

RIVRapid Intervention Vehicle
Miscellaneous » Unclassified

RIVRecreation Integration Victoria (Canada)
Miscellaneous

RIVRegolamento Internazionale Veicoli
Miscellaneous » Unclassified

RIVResource Indication Value
Miscellaneous » Unclassified

RIVRich Interactive Video
Miscellaneous

RIVRubinetterie Italiane Velatta
Miscellaneous » Unclassified

RIV3Recombinant Influenza Vaccine, Trivalent (Flublok®)
Medical

RIVARemote Interactive Visualization and Analysis (terrain rendering system)
Community

RIVARamus InterVentricularis Anterior (anterior interventricular branch of left coronary artery)
Medical » Physiology

RIVAReal Time Infrastructure Valuation Analysis (Canada)
Miscellaneous

RIVARealtime Intelligent Video Analytics
Miscellaneous » Unclassified