CDA, Cda, or CdA may refer to:

In education Central Delta Academy, a private school in Mississippi Certified dental assistant, in the United States Child Development Associate, a credential in the early care and education Communicative Disorders Assistant, a credential in assisting a registered Audiologist or Speech Language Pathologist, in Canada Coram Deo Academy, a private Christian school in Flower Mound, Texas

In law and government Government agencies Capital Development Authority, a kind of government entity Capital Development Authority (Islamabad), the Capital Development Authority of Pakistan Combined Development Agency, a uranium purchasing authority run by the US and UK government from 1948 Canadian Defence Academy, an organization in the Canadian Forces

Laws Communications Decency Act, a US law found partially unconstitutional Crime and Disorder Act 1998, a UK law Contagious Diseases Acts, three UK laws

Other uses in law and government Chargé d'Affaires Confidential disclosure agreement Criminal defense attorney

Organizations Political parties and lobbying groups Christian Democratic Alliance (South Africa) Christian Democrats of America, a Christian democratic organization in the US Christian Democratic Appeal, a Christian democratic party in the Netherlands College Democrats of America, the official youth outreach arm of the US Democratic Party Conservative Democratic Alliance, in the UK

Other organizations Catholic Daughters of the Americas, a Catholic women's charitable organization Canadian Dental Association, an association of dentists in Canada Diabetes Canada, which was known until 2017 as the Canadian Diabetes Association Chittagong Development Authority Club de Deportes Antofagasta, a Chilean football club Chinese Daoist Association

In science and technology In chemistry Chiral derivatizing agent, a type of chemical designed to react with enantiomers to indicate the enantiopurity Completely denatured alcohol, the most heavily denatured alcohol

In computing ".cda", a filename extension for a Compact Disc Audio track Cellular digital accessory, a means to identify the software version of a mobile phone Red Book (audio CD standard), Compact Disc Audio, the standard format for a CD Content Delivery Application, a component of a typical content management system

In health and medicine Canadian Dental Association, an association of dentists in Canada Diabetes Canada, which was known until 2017 as the Canadian Diabetes Association Chlorproguanil/dapsone/artesunate, an antimalarial drug Clinical Document Architecture, a healthcare documentation standard Congenital dyserythropoietic anemia, a blood condition Cytidine deaminase, an enzyme Communicative disorders assistant, a profession

In spaceflight Command and data acquisition station, in spacecraft operations Cosmic dust analyzer, an instrument on the Cassini–Huygens spacecraft

In mathematics Cantor's diagonal argument, a proof technique in set theory

Other uses on science and technology Canonical discriminant analysis, a type of linear discriminant analysis Cda, abbreviation for the orchid genus Cochlioda, a synonym of Oncidium Continuous descent approach, an aircraft approach method designed to reduce fuel burn and noise Controlled droplet application, a concept for improving the efficiency of pesticide application or drag area, the product of the drag coefficient and a reference area , the drag area in automobile aerodynamics Current differencing amplifier, amplifier taking current difference as input and voltage as output Clean dry air, a compressed air quality fulfilling the requirements of ISO 8573-1:2010 Class 0.

Other uses Child Detection Agency, in Disney Pixar Monster's Inc. Caran d'Ache (company), a Swiss fine arts products company Cardinia Road railway station, Melbourne Coeur d'Alene (disambiguation), multiple meanings , an airline from the Dominican Republic Critical discourse analysis, in critical theory Chantiers de l'Atlantique, French shipyard Compressed Dry Air, term used in manufacturing and industry

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