| Acronym | Definition |
|---|
| OC➣Optical Carrier |
| OC➣Orange County (California; New York) |
| OC➣Over Clock (computer CPU) |
| OC➣Of Course |
| OC➣Orange County (TV show) |
| OC➣Oklahoma Christian University |
| OC➣Ocean City, MD |
| OC➣Ocean City |
| OC➣Open Carry (firearm possession) |
| OC➣Own Character |
| OC➣Original Character (fanfiction new, made-up character) |
| OC➣OxyContin (prescription drug; aka Oxys) |
| OC➣Order Confirmation (purchases) |
| OC➣Out of Control |
| OC➣Odessa College (Odessa, Texas) |
| OC➣Orange Crush |
| OC➣Open Circuit (SCUBA and electronics) |
| OC➣On Center |
| OC➣Online Community |
| OC➣Offensive Coordinator (football) |
| OC➣Original Content |
| OC➣Owl City (band) |
| OC➣Organic Carbon |
| OC➣Organizing Committee (various organizations) |
| OC➣On Camera |
| OC➣Office Call |
| OC➣Obsessive-Compulsive |
| OC➣Oral Contraceptive |
| OC➣Off Camera (cinematography) |
| OC➣Organized Crime |
| OC➣Optical Center |
| OC➣Oleoresin Capsicum (active ingredient in pepper spray) |
| OC➣Oregon City (Oregon) |
| OC➣Oberlin College (Oberlin, Ohio) |
| OC➣Overcoat |
| OC➣Old Chicago (restaurant) |
| OC➣Orospu Cocugu (Turkish: Son of a Bitch) |
| OC➣Oregon Coast |
| OC➣On Course |
| OC➣Order of Canada |
| OC➣Oak Cliff (Dallas neighborhood) |
| OC➣Communications Division (US Coast Guard) |
| OC➣Oliver Cromwell |
| OC➣Oral Communication |
| OC➣Optional Component (Microsoft Windows) |
| OC➣Other Character |
| OC➣Officer Commanding |
| OC➣Office Coordinator (administrative position) |
| OC➣Office of Censorship |
| OC➣Operating Cost |
| OC➣Oil Cooled (welding) |
| OC➣Oversight Committee |
| OC➣Office of Communications |
| OC➣Overcurrent |
| OC➣Operating Company |
| OC➣Optical Communications |
| OC➣Orientation Course |
| OC➣Officer in Command |
| OC➣Old Chinese (language of pre 400BC) |
| OC➣OpenCup (online tournament) |
| OC➣Object Class |
| OC➣Organochlorine |
| OC➣Open Collector (electronics, transistors) |
| OC➣Office of Compliance (US FDA) |
| OC➣Owners Corporation (Australia) |
| OC➣Officer of the Order of Canada |
| OC➣Old Chap (ham radio shorthand) |
| OC➣Ottawa-Carleton |
| OC➣Optical Channel |
| OC➣Operational Control |
| OC➣Open Content |
| OC➣Operating Characteristic |
| OC➣Office of the Commissioner |
| OC➣Open Canvas (art program) |
| OC➣Office of the Comptroller |
| OC➣Oakland City (Indiana College) |
| OC➣Operational Capability |
| OC➣Operation Center |
| OC➣Officer Candidate |
| OC➣Operator Console |
| OC➣Old Covenant (biblical law) |
| OC➣Operant Conditioning (a training technique) |
| OC➣Opposing Counsel (legal notation) |
| OC➣Operating Committee |
| OC➣Outside Corner (measuring in construction) |
| OC➣Ondes Courtes (French: shortwave) |
| OC➣Orlando Cabrera (baseball player) |
| OC➣Obstetric Cholestasis |
| OC➣Oxnard College (Oxnard, CA) |
| OC➣Over Crowded |
| OC➣Operating Carrier |
| OC➣Output Compare |
| OC➣Observer Controller |
| OC➣Open Computing |
| OC➣Oceanic Crust |
| OC➣Operation Class |
| OC➣Output Coupler (optics, lasers) |
| OC➣Ocean Conservancy |
| OC➣Operations Coordinator |
| OC➣Offering Circular |
| OC➣Oracle Clinical |
| OC➣Oakwood College (Alabama) |
| OC➣Oglethorpe County (Georgia) |
| OC➣Optical Colonoscopy |
| OC➣On-scene Commander |
| OC➣Operations Controller |
| OC➣Overture Center (performing arts) |
| OC➣Output Check |
| OC➣Out Calls |
| OC➣Organisme Certificateur |
| OC➣Out Cast (gaming clan) |
| OC➣One Communications, Inc. |
| OC➣Occupancy Certificate (residential license) |
| OC➣Christian O'Connell (radio personality; UK) |
| OC➣Octopus Card (Hong Kong smart payment card) |
| OC➣Operating Curve |
| OC➣Organisme Conventionné (French: Accredited Body) |
| OC➣Operation Channel |
| OC➣Omnipotent Carnage (gaming clan) |
| OC➣OpenCalphad (computational thermodynamics) |
| OC➣Other's Cost |
| OC➣Outdoors Center (Texas A&M) |
| OC➣Outside Circumference |
| OC➣Over-Crossing |
| OC➣Ordinary Cadet |
| OC➣Orientation Counselor |
| OC➣Operation Context |
| OC➣Oxygen Cutting |
| OC➣Opere Citato (Latin: In the Work Cited) |
| OC➣Operator Centralization |
| OC➣Organizational Committee of ACC |
| OC➣Odin's Court (rock and metal band) |
| OC➣Ormiston College |
| OC➣Ordres Courants (French: current orders) |
| OC➣Oudste Categorie (Dutch) |
| OC➣Officer's Cook |
| OC➣Otaku Convention (Japanese film festival) |
| OC➣Organizadora de Comercio (Spanish; Guatemala) |
| OC➣Ordnance Controller |
| OC➣Office and Communication Module |
| OC➣Outside Contracting/Contractor |
| OC➣Order of the Carmelites (religious order) |
| OC➣Outage Continuing |
| OC➣Outer Chuck |
| OC➣Operational Concept/Operating Concept |
| OC➣Ochoa & Clary (chemistry team) |
| OC➣Open Within Memory Cell |