# CDA

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

### 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
* CdA or drag area, the product of the drag coefficient and a reference area
** CdA, the drag area in automobile aerodynamics
* Current differencing amplifier, amplifier taking current difference as input and voltage as output

## Other uses

* Caran d'Ache (company), a Swiss fine arts products company
* Cardinia Road railway station, Melbourne
* Coeur d'Alene (disambiguation), multiple meanings
* Compañia Dominicana de Aviación, 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