GTMC

AcronymDefinition
GTMCGuild of Travel Management Companies (London, England, UK)
GTMCGlenwood Telephone Membership Corporation (Nebraska)
GTMCGypsy Tour Motorcycle Classic
GTMCGovernment Technology Managers Conference
GTMCGeorge Tyler Moore Center (Shepherd University)
GTMCGingival Tissue Mononuclear Cells (periodontitis)