Abbreviations beginning with o

ORBOOle Reinert Berg-Olsen (artist; Norway)
Miscellaneous

ORBOOracle Retail Back Office (software)
Miscellaneous

ORBOOrgan Retrieval Banking Organisation (India)
Miscellaneous

ORBPOhio River Bridges Project
Miscellaneous

ORBPOpening Range Breakout Preference
Miscellaneous » Unclassified

ORBSOncoplastic Reconstructive Breast Surgery
Academic & Science

ORBSOpen Relay Blocking System (spam-blocking website)
Academic & Science

ORBsOnline Railway Bookshop
Business

ORBSOpen Relay Behaviour-modification System
Community

ORBSOnline Room Booking System
Computing » IT

ORBSOpen Relay Behavior Modification System
Computing » IT

ORBSOpen Relay Blocking System
Computing » IT

ORBSOregon Recreational Boat Survey (Oregon Department of Fish and Wildlife)
Governmental

ORBSOncoplastic Reconstructive Breast Surgery
Medical » Surgical

ORBSOhio Researchers of Banded Spirits (est. 2007)
Miscellaneous

ORBSOptimal Regulatory Board System
Miscellaneous » Unclassified

ORBSOregon Recreational Boat Survey
Miscellaneous » Unclassified

ORBSOverdose Risk Behavior Scale
Miscellaneous » Unclassified

ORBSBaghdad Saddam International, Iraq
Regional » Airport Codes