| Acronym | Definition |
|---|
| CA | Canada (top level internet domain) |
| CA | Computer Associates International Inc. |
| CA | California (US postal abbreviation) |
| CA | Circa |
| CA | Central Air |
| CA | Class A (TV call signs) |
| CA | Columbia Association (Columbia, MD) |
| CA | Central America |
| CA | Control Access |
| CA | Change of Address |
| CA | Certificate Authority (encryption) |
| CA | Cost Analysis |
| CA | Care |
| CA | Computer Application (school course) |
| CA | Certification Authority |
| CA | Cash Advance |
| CA | Consumer Action |
| CA | Current Account |
| CA | Computer Animation |
| CA | Cable |
| CA | Commercial Activities |
| CA | Construction Administration (USACE) |
| CA | Contract Administrator |
| CA | Classic Army (Airsoft Manufacturer) |
| CA | Court of Appeal |
| CA | Gun (or Heavy) Cruiser |
| CA | Code Available |
| CA | Contract Administration |
| CA | Communications Activities |
| CA | Conference Agenda |
| CA | Companies Act (India) |
| CA | Contract Award |
| CA | Cancer (medical) |
| CA | Call Agent (VoIP) |
| CA | Commercial Accounts |
| CA | Collective Agreement |
| CA | Conseil d'Administration (French: Board of Directors) |
| CA | Cable Assembly |
| CA | Consumers Association |
| CA | Consumers' Association (UK) |
| CA | Community Acquired (infection) |
| CA | Club America (Mexican soccer team) |
| CA | College of Agriculture (various colleges and universities) |
| CA | Clinical Assistant |
| CA | Consumer Alert |
| CA | Civil Affairs |
| CA | Cooperative Agreement |
| CA | Calcium |
| CA | Captain America (comic) |
| CA | Combat Arms |
| CA | Current Awareness |
| CA | Counter Attack |
| CA | Civil Aviation |
| CA | Carlisle (postcode, United Kingdom) |
| CA | Cocaine Anonymous (Cocaïnomanes Anonymes) |
| CA | Common Applications |
| CA | Commercially Available |
| CA | Corporate Action |
| CA | Christina Aguilera |
| CA | Colorado Avalanche (hockey team) |
| CA | Confidentiality Agreement |
| CA | Chartered Accountant |
| CA | Cricket Australia |
| CA | Compressed Air |
| CA | Critical Appraisal |
| CA | Cyber Acoustics (PC/game console sound systems) |
| CA | Chemical Abstracts |
| CA | Contrast Agent |
| CA | Cardiac Arrest |
| CA | Computer-Aided |
| CA | Connections Academy (K-8 online school) |
| CA | Combined Arms |
| CA | Cagliari (Sardinia, Italy) |
| CA | Christian Aid |
| CA | Credit Agricole (Agricultural Credit) |
| CA | Contract Action |
| CA | Computer Algebra |
| CA | Certificate of Authenticity |
| CA | Competent Authority (EU Medical Devices Directive) |
| CA | Conditional Access |
| CA | Corrective Action |
| CA | Client Assessment |
| CA | Cycling Australia |
| CA | Commercial Agent |
| CA | Collision Avoidance |
| CA | Cellular Automata |
| CA | Cost Account |
| CA | Chief Accountant |
| CA | Customer Acceptance |
| CA | Carcinoma |
| CA | Clay Aiken (singer) |
| CA | Conversation Analysis (the empirical study of talk in interaction) |
| CA | Communication Application |
| CA | Cleaning Agent |
| CA | Clerical Assistant (obsolete, now administrative assistant) |
| CA | Control Assembly |
| CA | Chiropractic Assistant |
| CA | Conformity Assessment (ANSI term) |
| CA | Chronological Age |
| CA | Community Assistant |
| CA | Consular Affairs (US State Department) |
| CA | Catalan Language (ISO 639-1 Code) |
| CA | Communications Access (line) |
| CA | Combustion Air |
| CA | Citric Acid |
| CA | Communication Assistant |
| CA | Cancer Antigen |
| CA | Castle Age |
| CA | Control Account |
| CA | Change Agreement |
| CA | Cellulose Acetate (type of reverse osmosis membrane) |
| CA | Computer Assistant (or Computing Assistant) |
| CA | Climate Audit (website) |
| CA | Carmelo Anthony (NBA Player) |
| CA | Community Advisor |
| CA | Catchment Area (wastewater operations) |
| CA | Colorado Academy |
| CA | Air China (airline code) |
| CA | Canadian Alliance party (Canada) |
| CA | Catamarca (Argentina province, airline code) |
| CA | Cary Academy (Cary, NC, USA) |
| CA | Combat Aircraft |
| CA | Chromatic Aberration (lens error) |
| CA | Chambre d'Agriculture (French: Chamber of Agriculture) |
| CA | Comunidad Autónoma (Spain) |
| CA | Chiffre d'Affaire (France) |
| CA | Civil Administration |
| CA | Conference Assistant |
| CA | Contract Agent |
| CA | Census Agglomeration |
| CA | Cranking Amps (battery) |
| CA | Chief Advisor |
| CA | Compressor, Air |
| CA | Command Authority |
| CA | Citizen Act |
| CA | Charlton Athletic |
| CA | Carbonic Anhydrase |
| CA | Conceptart (website) |
| CA | Certified Arborist |
| CA | Customer Advocate |
| CA | CyanoAcrylate (glue) |
| CA | Carrier Aircraft |
| CA | Contracting Activity |
| CA | Watermarked (philatelic notation for stamps or paper) |
| CA | Countryside Alliance (UK) |
| CA | Commonwealth's Attorney |
| CA | Cryptanalysis |
| CA | Contract Authority |
| CA | Crank Angle (Mechanical Engineering) |
| CA | Configuration Audit |
| CA | Cabin Attendant (aviation) |
| CA | Current Asset |
| CA | Conjoint Analysis |
| CA | Corazon Aquino |
| CA | Cone Angle |
| CA | Certificat d'Aptitude (French) |
| CA | Corrente Alternada (Spanish: Alternating Current) |
| CA | Carbohydrate Antigen (tumoral marker) |
| CA | Capability Assessment (US Air Force) |
| CA | Compania Anonima |
| CA | Chess Assistant |
| CA | Chromosomal Aberration |
| CA | Compulsory Acquisition |
| CA | Culver Academies |
| CA | Call Attempt |
| CA | Constant Amplitude |
| CA | Cayman Airways (airline code) |
| CA | Clear Aperture |
| CA | Construction Authorization |
| CA | Combat Assault |
| CA | CyberArmy |
| CA | Chemical Addition |
| CA | Cruising Association |
| CA | Corneal Abrasion (ophthalmology) |
| CA | Ciudad Acuna (Mexico) |
| CA | Counter Air |
| CA | Continual Assessment |
| CA | Concentration in Air |
| CA | Conditioned Avoidance (psychology/psychiatry) |
| CA | Commonwealth Act (Philippines) |
| CA | Croquet Association (UK) |
| CA | Criticality Analysis |
| CA | Church Army |
| CA | Credits Applied (insurance) |
| CA | Certified Acupuncturist |
| CA | Coordinating Authority |
| CA | Civic Amenity (UK) |
| CA | Christijan Albers (formula one driver) |
| CA | Croatian Army |
| CA | Cyberangels (International online help association) |
| CA | Communications Analysis |
| CA | Constructive Approximation |
| CA | Corporate Avenger (Band) |
| CA | Connection Authorization |
| CA | Caritas Australia |
| CA | Council of Administration (Universal Postal Union) |
| CA | Cornu Ammonis (hippocampal subregion in the medial temporal lobe) |
| CA | Connectivity Africa (International Development Research Centre; Canada) |
| CA | Contract Authorization |
| CA | Change Authorization |
| CA | On-Call Pay (attendance code) |
| CA | Critical Assembly |
| CA | Computer and Automation |
| CA | Conservancy Association |
| CA | Commercial Announcement |
| CA | Charge Amplifier |
| CA | Centare |
| CA | Critical Alarm (Sprint) |
| CA | Channel Aggregation |
| CA | Cortese Attenzione (Italian: Dear Mr.) |
| CA | Coal Authority (UK) |
| CA | Cell Arrival |
| CA | Call Accepted (ITU-T) |
| CA | Controller of Accounts |
| CA | Cranial Academy |
| CA | Contract Assistant |
| CA | Conjunction Analysis (satellite operations) |
| CA | Certification Agent |
| CA | Conflict Alert (Air Traffic Control) |
| CA | Contamination Avoidance |
| CA | Condiloma Acuminado (Spanish) |
| CA | Chemical Alarm |
| CA | Contamination Area |
| CA | Certified Archivist |
| CA | Gun Cruiser |
| CA | Combat Assessment |
| CA | Coverage Analyzer |
| CA | Corrective Activities |
| CA | Complementary Access |
| CA | Course Acquisition |
| CA | Certification Acceptance |
| CA | Competition Advocate |
| CA | Command Archive |
| CA | Cross Apply (debating) |
| CA | Connection Approval |
| CA | Controlled Availability |
| CA | Bromobenzyl Cyanide (tear gas, riot control agent) |
| CA | Construction Advisor |
| CA | Cell Averaging (Constant False Alarm Rate processor type) |
| CA | Congressional Add |
| CA | Congressional Audit |
| CA | Command Assessment |
| CA | Common Atrium |
| CA | Computer Accuracy (aviation competition) |
| CA | Corrosion Allowance |
| CA | Centro Agrícola (Spanish) |
| CA | Carbon Absorber |
| CA | Channel Adaptor |
| CA | Channel Attach |
| CA | Coordinated Atomic (robotics) |
| CA | COMSEC Account |
| CA | Call Allocation |
| CA | Champagne d' Argent (rabbit breed) |
| CA | Country Attaché |
| CA | Customer Accommodations |
| CA | Crappy Apple |
| CA | Cuba Action |
| CA | Concentration Aura (gaming, World of Warcraft) |
| CA | Challenge Athena |
| CA | Cruiser-Armored (naval vessel) |
| CA | Circuit Assurance (Modem Information) |
| CA | Connect Acknowledge (ITU-T Rec. I.451) |
| CA | Chesapeake & Albemarle (railroad) |
| CA | Certified Acupressurist (natural therapy designation) |
| CA | Carbon Anhydrase |
| CA | Contingency Abort |
| CA | Crusader Aura (gaming, World of Warcraft) |
| CA | Chess Advisor |
| CA | Cryptic Axe (gaming, Diablo II) |
| CA | Cyclic Abelian (code) |
| CA | Compact Assignment |
| CA | Chevron Autopia |
| CA | Club Amiérdica (Mexican female soccer team) |
| CA | Charted Account |
| CA | Consulate Date (international adoptions) |
| CA | Conformability Analysis (DFQ technique) |
| CA | Conventional Applicator |
| CA | Contracting Authorization |
| CA | Carril Auxiliar (Spanish) |
| CA | Classification and Audit |
| CA | Commercially Abundant |
| CA | Collocated Activities |
| CA | Coaster Arsenal (roller coaster website) |
| CA | Canberra Albuquerque, Inc |
| CA | Caddell Appraisals, Inc. (Estes Park, Colorado) |
| CA | Computer Acoustics, Ltd |
| CA | Christos Alexandrou |
| CA | Clusterhead Announcement |
| CA | Crewman's Associate |
| CA | Combat/Controller Amplifier |
| CA | (Air Traffic) Control Advises |
| CA | Directorate of Corporate Affairs (NIMA) |
| CA | Collison Avoiding |
| CA | Command Channel Adapter |
| CA | Contract/Criticality Analysis |
| CA | Committee of Adjustment (Canada) |
| CA | Commercial Aviation |