Organizations
* Andorran Olympic Committee (Catalan: ''Comitè Olímpic Andorrà'') * Argentine Olympic Committee (Spanish: ''Comité Olímpico Argentino'') * Aruban Olympic Committee (Papiamento: ''Comité Olímpico Arubano'') * Canadian Osteopathic Association, a professional association of osteopathic physicians in Canada * Chicago Options Associates, an American company that specializes in trading options and futures contracts * Clowns of America International, an American organization that represents clowns * Committee of Administrators (CoA), oversaw the reform in 2017 of the Board of Control for Cricket in India * Council of Agriculture, agriculture-related institution in Taiwan * Council of Architecture, an Indian governmental organization that registers architects in the country * Community Oncology Alliance, an American non-profit that advocates for independent, community oncology providers and patients. * Continental Airlines, by ICAO airline code * Customs Officers' Association of New Zealand, a trade union * COA Ontario, an association representing condominium owners in Canada * Commission on Audit (Philippines), government agency ** Commission on audit, another name for supreme audit institutionsColleges
* College of Alameda, a college in Alameda, California * College of The Albemarle, a college in Elizabeth City, North Carolina, US * College of the Atlantic, a college in Bar Harbor, Maine, USLaw and business
* Certificate of authenticity, a document demonstrating that an item is as claimed * Chart of accounts, a categorized list of accounts used by a business * Charter Ownership Agreement, the right to purchase season tickets to a particular seat at a stadium * Court of Appeal (England and Wales), a court that reviews the decisions reached by lower courtsScience, medicine and technology
* Care-of address, a temporary IP address assigned to a mobile internet device * Certificate of analysis, a document certifying the identification and purity of a chemical a drug; see Drug reference standard * Certified Ophthalmic Assistant, entry level assistant as certified by Joint Commission on Allied Health Personnel in Ophthalmology (IJCAHPO) * Change of Authorization, a designation forOther uses
* Certificate of Authorization, used within theSee also
* Coa (disambiguation) {{disambiguation