ADX

• IATA airport code for Leuchars Station in Scotland, United Kingdom (formerly RAF Leuchars) ==Business and technology==

• Abu Dhabi Securities Exchange • Acura ADX, a subcompact luxury crossover SUV • Adams Express Company, stock symbol • ADX (file format), a streamed audio format • Authenticated Data Experiment, an early release of Bluesky's decentralized social network protocol • Average directional movement index, a technical indicator of trend strength in prices of a financial instrument such as a stock or bond • DoubleClick Ad Exchange (AdX), an ad exchange platform merged into Google Ad Manager • Intel ADX, add-carry instruction extensions in the x86 microprocessor architecture • Azure Data Explorer, a cloud-based data analytics service ==Medicine==

• Adrenalectomy, the surgical removal of one or both adrenal glands or the state of having had one or both removed • Adrenal ferredoxin, a small iron-sulfur protein in animals including humans ==Music==

• ADX, alternative spelling of British punk band The Adicts ==Other==

• Administrative maximum or "supermax" prisons in the United States • United States Penitentiary, Florence ADX, the federal supermax prison in Florence, Colorado • Alpha Delta Chi, an American nation-wide Christian sorority • Amdo Tibetan language, from its SIL language code