| Acronym | Definition |
|---|
| COC | Chamber of Commerce |
| COC | Clash of Clans (gaming) |
| COC | Call of Cthulhu |
| COC | College of the Canyons |
| COC | Chain of Custody |
| COC | Continuum of Care |
| COC | Canadian Opera Company |
| COC | Cocaine |
| COC | Cost of Care (healthcare analytics) |
| COC | Cost of Capital |
| COC | Center of Concern |
| COC | Certificate Of Conformance |
| COC | Code of Conduct |
| COC | Certificate Of Compliance |
| COC | Corcoran (Amtrak station code; Corcoran, CA) |
| COC | Corn on Corn (agriculture) |
| COC | Certificate of Candidacy (Philippines) |
| COC | Certificate of Conformity |
| COC | Canadian Olympic Committee |
| COC | Church of Christ |
| COC | Christian Outreach Centre (church, Brisbane, Australia) |
| COC | Contempt of Court (judicial order) |
| COC | Corruption of Champions |
| COC | Certificate of Coverage |
| COC | Chain of Confidence (Tupperware) |
| COC | Combined Oral Contraceptive |
| COC | Church of the Covenant (various locations) |
| COC | Conference Call |
| COC | Camp of Champions (Canada) |
| COC | Comptroller of the Currency |
| COC | Corrosion Of Conformity (band) |
| COC | Certificate Of Competency |
| COC | Coptic Orthodox Church |
| COC | Commissioner of Charities (Singapore) |
| COC | Chain of Command |
| COC | Cost of Conformance (Cost of Quality component) |
| COC | Council of Colonels |
| COC | Certificate of Citizenship (adoption) |
| COC | Center of Curvature (geometry) |
| COC | Citizens Oversight Committee |
| COC | Ceramic-on-Ceramic (orthopedics) |
| COC | Contraceptifs Oraux Combinés (French: Combined Oral Contraceptives) |
| COC | Circuit Order Control |
| COC | Close Open Close |
| COC | Coded Optical Character |
| COC | Chip on Ceramic |
| COC | Channelized Optical Carrier |
| COC | Certificate of Commencement |
| COC | Clerk of Courts (various states) |
| COC | Chinese Olympic Committee |
| COC | Change of Circumstance (various organizations) |
| COC | Cyclic Olefin Copolymer |
| COC | Chief of Chaplains |
| COC | Contaminant of Concern |
| COC | Certificate of Completion |
| COC | Change of Command (military) |
| COC | Circle of Confusion (photography) |
| COC | Cost-of-Consumables |
| COC | Clear of Conflict (flight) |
| COC | Cab Over Camper (pickup truck accessory) |
| COC | Convention over Configuration (software design paradigm) |
| COC | Community Outreach Center (various organizations) |
| COC | Chemical of Concern (environmental contaminant) |
| COC | Campaign of Conscience |
| COC | Cleveland Open Cup |
| COC | Constituents of Concern |
| COC | Combat Operations Center |
| COC | Committee on Curriculum (various universities) |
| COC | Conference Organizing Committee (various organizations) |
| COC | Committee on Carcinogenicity of Chemicals in Food, Consumer Products and the Environment (UK) |
| COC | Council of Canadians (Lobby Group) |
| COC | Center of Competence |
| COC | Captains of Crush (Iron Mind; exercise hand gripper) |
| COC | Change of Control |
| COC | Chabossière Olympique Club (French sports club) |
| COC | Council on Competitiveness |
| COC | Club Olympique Castelnaudais (French sports club) |
| COC | Conoco, Inc. (stock symbol) |
| COC | Cumulus-Oocyte Complex |
| COC | Chamber of Chat (Harry Potter fan site) |
| COC | Congress Organizing Committee (various organizations) |
| COC | Committees Of Correspondence (NY national political organization) |
| COC | Committees of Correspondence |
| COC | Course of Construction (insurance) |
| COC | Command Operations Center |
| COC | Club Omnisports Châteauneuvois (French sports club) |
| COC | Committee on Conscience (US Holocaust Memorial Museum) |
| COC | Cycle on Cycle |
| COC | Club Olympique Creusot Bourgogne (French rugby club) |
| COC | Club des Ornithologues de Châteauguay (French: Châteauguay Ornithology Club; Châteauguay, Quebec, Canada) |
| COC | Council of Chiefs (Order of the Arrow, Boy Scouts of America) |
| COC | Contest of Champions (marching band competition) |
| COC | Club Omnisports Couronnais (French sports club) |
| COC | Cascade Orienteering Club (est. 1979; Seattle, WA) |
| COC | Continuance of Certification |
| COC | Commandant of Cadets |
| COC | Career Opportunities Center (various schools) |
| COC | Conditions Of Carriage (airlines "fine print") |
| COC | Cash On Cash |
| COC | Cone of Cold (gaming, World of Warcraft) |
| COC | Central Office Code (first 3 digits of a local phone number, the so-called Exchange or Prefix) |
| COC | Commission on Certification |
| COC | Club Olympique Courbevoie Hockey sur Glace (French ice hockey club) |
| COC | Club Omnisports des Coteaux (French sports club) |
| COC | Calcifying Odontogenic Cyst (oral pathology) |
| COC | Carnival of Carnage (band) |
| COC | Community of Caring (est. 1980) |
| COC | Colloidal Organic Carbon |
| COC | City of Chester |
| COC | Clan Owners Club (automobile club; est. 1978) |
| COC | Center on Cell (programming) |
| COC | Counselor on Call (various schools) |
| COC | Central Office Connection |
| COC | Centre Omnisport de Chennevières (French sports club) |
| COC | Canadian Orchid Congress |
| COC | Commission of Colleges |
| COC | Cycle of Concentration (water treatment) |
| COC | Customer Own Collection |
| COC | Christ on A Crutch (punk rock band) |
| COC | Customer Originated Change |
| COC | Children of the Cathedral (Fallout game) |
| COC | Conventional Oxidation Catalyst |
| COC | Certificate of Composition |
| COC | Circle of Chaos |
| COC | Close-Open-Close |
| COC | Country of Commencement (airlines) |
| COC | Clouds Over California (DevilDriver song) |
| COC | College of Chiropractors (various locations) |
| COC | Coastside Opportunity Center |
| COC | Corps Operations Center |
| COC | Condition of Class (transport status) |
| COC | Crucible of Carnage (World of Warcraft) |
| COC | Centro Operativo Combinato (Italy) |
| COC | Carry Over Credit |
| COC | Carrier Own Container (shipping) |
| COC | Crystals of Chaos (game) |
| COC | Canadian Options Course |
| COC | Computer Operations Center |
| COC | Control Officer Console (US Navy watch station for Naval Gun Fire support) |
| COC | Cultureel Ontspannings Centrum (Dutch: Culture and Recreation Center; Netherlands) |
| COC | Cult of Cod |
| COC | Current Operations Cell |
| COC | Capital Approval Committee |
| COC | Climb on Course |
| COC | Conventional Operating Current |
| COC | Continuity of Combustibility |
| COC | Creators of Carnage (gaming clan) |
| COC | Container Operations Center |
| COC | Coalition Operations Center |
| COC | Cleaned Optics & Coronas (copier repair) |
| COC | Centralized Operational Control |
| COC | Commander of Command (Australia) |
| COC | Church of Clancy (gaming community) |
| COC | Customer Order Cycle |
| COC | Chart Overlay Copier |
| COC | Communication, Orientation, Coordination (laparoscopy team training model) |
| COC | Customer Order Confirmation (sales and receivables) |
| COC | Cappuccino Owners Club |
| COC | Central Operating Compartment (submarine) |
| COC | Cycle of Cooling |
| COC | Cast Out Cookies |
| COC | Cash Operating Cycle |