ADN may refer to:
Aviation
- Aircraft Data Network, a proposed network standard for commercial aircraft installations
- IATA airport code for Andes Airport in Antioquia Department, Colombia
Education
- Associate Degree in Nursing, similar to Associate of Science in Nursing
- A common term for the student section of Athens Drive High School
Media
Television and radio
- XHTVM-TDT, branded as adn Noticias, a Mexican television channel
- ADN Radio, a Chilean radio station
Newspapers
- ADN (newspaper), a Spanish free daily newspaper
- , the state news agency of East Germany
- Anchorage Daily News, an Alaskan newspaper
Other
- ADN, the original French title of DNA, a 2020 drama film
Politics
- National Democratic Alliance (Italy) (Italian: ), a former political party of Italy
- National Democratic Alternative (Portugal) (Portuguese: ), a political party of Portugal
- Nationalist Democratic Action (Spanish: ), a political party of Bolivia
Science
- Adiponitrile
- Ammonium dinitramide, a rocket propellant
- Auditory Disability with Normal hearing, a term for King-Kopetzky syndrome
- DNA, as abbreviated in various languages (particularly Romance languages such as Spanish and French)
Technology
- Abbreviated Dialing Numbers, two or three digits sequence to reach specific telephone numbers, such as those of public services
- Application Delivery Network, a suite of technologies for improved delivery of applications across the Internet
- App.net, an online social networking service
- Digital Negative (file format), a raw image format designed by Adobe Systems
Other uses
- Abbreviated dialing number
- Adang language, a Trans-New Guinea language of Indonesia
- ADN, the stock symbol of Aberdeen Asset Management
- Ardrossan Town railway station, UK
- Ashley, Drew and Northern Railway, a defunct railroad in Arkansas
- European Agreement concerning the International Carriage of Dangerous Goods by Inland Waterways, part of the UN Recommendations on the Transport of Dangerous Goods