Abbreviations beginning with o

OPCLOpen-Plus-Closed-Loop (control method)
Community

OPCLOffice of Privacy and Civil Liberties (US DOJ)
Governmental

OPCMOperative Plasterers and Cement Masons (labor union; Laurel, MD)
Academic & Science

OPCMOptimal Pulse Code Modulation
Academic & Science

OPCMOld Point Comfort Marina (Fort Monroe, VA)
Business

OPCMOrthotropic Piezoelectric Composite Materials
Business » Products

OPCMOsborne Partners Capital Management
Business » Companies & Firms

OPCMOakland Public Conservatory of Music
Community » Music

OPCMObrona Przeciw Ciemnym Mocom (Polish: Defense Against the Dark Arts; Harry Potter fan forum)
Governmental

OPCMOntario Provincial Council of Machinists
Governmental » Council

OPCMOakland Public Conservatory of Music (California)
Miscellaneous

OPCMOffice of Policy Coordination and Management (National Telecommunications and Information Administration)
Miscellaneous

OPCMOntario Provincial Council of Machinists
Miscellaneous » Unclassified

OPCMIAOperative Plasterers and Cement Masons International Association of the United States and Canada
Business » Professional Organizations

OPCoOhio Power Company
Business

OPCOOnondaga Pottery Company (Syracuse, NY)
Business