| Acronym | Definition |
|---|
| COA | Coat of Arms |
| COA | Center for Online Addiction |
| COA | Certificate Of Authenticity |
| COA | Coenzyme A (cellular respiration) |
| COA | Certificate of Analysis |
| COA | Commission on Audit (Philippines) |
| COA | College of Arts |
| COA | Council of Agriculture (Taiwan) |
| COA | Council on Aging |
| COA | Court of Appeals |
| COA | Center of Activity |
| COA | College of the Atlantic (Bar Harbor, Maine, USA) |
| COA | Chart Of Accounts |
| COA | Company of Animals (various locations) |
| COA | Cost of Attendance |
| COA | Community of Action |
| COA | Council on Accreditation |
| COA | Conditions of Access (various organizations) |
| COA | Center of Attention |
| COA | College of Architecture (various organizations) |
| COA | Change of Address |
| COA | College of Arms (English heraldic authority) |
| COA | City of Austin (Texas) |
| COA | Certificate of Approval (Australia, permit to discharge into environment) |
| COA | Care-Of Address |
| COA | Communities of America (Tampa Bay, FL) |
| COA | Condition of Approval |
| COA | Certificate of Authority |
| COA | Certificate of Acceptance (New Zealand construction) |
| COA | Committee on Accreditation |
| COA | Commission on Aging (various locations) |
| COA | Course Of Action |
| COA | Choice of Arm (cadet regiment selection) |
| COA | Conditions of Acceptance (various organizations) |
| COA | Cost of Acquisition |
| COA | Change of Authorization (networks) |
| COA | Commonwealth of Australia |
| COA | Committee of Adjustment (Canada) |
| COA | Comité Olympique Algérien (French: Algerian Olympic Committee; Algeria) |
| COA | Certificate of Authorization (FAA - UAS operations in the national air space) |
| COA | Continental Air Lines (ICAO code) |
| COA | Care for Older Adults (various organizations) |
| COA | Courses of Action |
| COA | City of Amarillo |
| COA | Coming of Age |
| COA | Coarctation of Aorta |
| COA | Certificate of Appreciation |
| COA | Centraal orgaan Opvang Asielzoekers |
| COA | Category of Aid (healthcare) |
| COA | Comptroller Of the Army |
| COA | Clinical Outcome Assessment |
| COA | Certificate of Appealability (judiciary) |
| COA | Condo Owners Association (various locations) |
| COA | Condominium Owners Association (various locations) |
| COA | Certificate of Airworthiness |
| COA | Cheerleaders of America |
| COA | City of Anaheim |
| COA | City of Albuquerque |
| COA | Change Of Assignment |
| COA | Commission of Accreditation |
| COA | Center of Automotive (University of Applied Sciences; Germany) |
| COA | Contract of Afreightment (shipping) |
| COA | Conditions of Acceptability (various companies) |
| COA | Clean Ocean Action |
| COA | Change of Authorization |
| COA | Care of Address |
| COA | Country of Assembly |
| COA | Confirm on Arrival |
| COA | Compliance Oriented Architecture |
| COA | Change of Atmosphere (est. 2000) |
| COA | Canadian Olympic Association |
| COA | Commissioned Officers Association (of the United States Public Health Service) |
| COA | Canada-Ontario Agreement |
| COA | Child of Alcoholic (support group) |
| COA | Committee on Admissions |
| COA | Commission on Athletics |
| COA | Committee on Administration (various organizations) |
| COA | Conchologists of America |
| COA | Club d'Ornithologie d'Ahuntsic (French: Ahuntsic Ornithological Club; Ahuntsic, Canada) |
| COA | Central Office of Architecture |
| COA | Center for Organic Agriculture (University of Florida) |
| COA | Confirmation on Arrival (computing) |
| COA | Clear on Arrival |
| COA | Court of Auditors (EU) |
| COA | Creative Outdoor Advertising (Jupiter, FL) |
| COA | Clowns of America |
| COA | City of Ashes |
| COA | Community Outreach Activity (various organizations) |
| COA | Certified Ophthalmic Assistant |
| COA | Coopérative Ouvrière d'Ameublement (French: Cooperative Workers of Furniture) |
| COA | Club Olympique Avallonnais (French: Avallon Olympic Club; Avallon, France) |
| COA | Center Operations Area (NASA) |
| COA | Classic Open Air (festival; Germany) |
| COA | Court of Audit (Lebanon) |
| COA | Casino Operators Association (UK) |
| COA | Cédula de Operación Anual (Mexico) |
| COA | California Orthopaedic Association |
| COA | Commission on Opticianry Accreditation |
| COA | Centrale Ornithologique Aves (French ornithology center; Belgium) |
| COA | Collection Agreements |
| COA | Competitive Operating Agreement |
| COA | Clinical Operations Associate |
| COA | Crown of Ages (Diablo II item) |
| COA | Club Ornithologique d'Argentat (French ornithological club) |
| COA | Cercle des Ours Andennais (French; Belgian student organization) |
| COA | Code of Arms (Dubstep Record Label) |
| COA | New Hampshire Conference on Aging |
| COA | Central Operating Authority (NATO) |
| COA | Connection Approval Office |
| COA | Concertgebouw Orchestra, Amsterdam |
| COA | Canadian Ostrich Association |
| COA | Coaliton of Anti-Pirates (gaming) |
| COA | Connecticut Opticians Association |
| COA | Canadian Osteopathic Association |
| COA | Change Over Acknowledgement |
| COA | Calli Ollin Academy (Tucson, AZ) |
| COA | Circle of Awareness (skydiving instruction) |
| COA | American Conger (FAO fish species code) |
| COA | Cover Our Asses |
| COA | Certificate in Offshore Administration (Island of Jersey, benchmark financial qualification) |
| COA | Coastal Ocean Activities |
| COA | Conscious, Oriented, Alert (assessment by paramedics) |
| COA | Computer Operations Administrator |
| COA | Cryogenic Optical Assembly |
| COA | Change Order Account |
| COA | Current Operating Allowances |
| COA | Call on Arrival (shipping) |
| COA | Chesapeake Oyster Alliance (coalition) |
| COA | Customer Owned Assets |
| COA | Charlie's Other Angels |
| COA | California Olive Association (Sacramento, CA) |
| COA | Coupled Oscillator Array |
| COA | Cult of Angels (modeling group) |