OPCM

AcronymDefinition
OPCMOakland Public Conservatory of Music (California)
OPCMOptimal Pulse Code Modulation
OPCMOld Point Comfort Marina (Fort Monroe, VA)
OPCMOperative Plasterers and Cement Masons (labor union; Laurel, MD)
OPCMOffice of Policy Coordination and Management (National Telecommunications and Information Administration)
OPCMObrona Przeciw Ciemnym Mocom (Polish: Defense Against the Dark Arts; Harry Potter fan forum)