ADD, or attention deficit disorder, is a former name for attention deficit hyperactivity disorder.
Add or ADD may also refer to:
Entertainment "A.D.D. (American Dream Denial)", a song on the 2002 album Steal This Album! by System of a Down "A.D.D", a song on the 1998 album Hard to Swallow by Vanilla Ice "ADD", a song on the 2017 album Mix & Match by Loona sub-unit Odd Eye Circle "ADD", a song on the 2022 album Cave World by Viagra Boys A.D.D. (Audio Day Dream), a 2007 album by Blake Lewis
Science and technology Accumulated degree days, a measure of heating or cooling ADD, a SPARS code appearing on some compact disc recordings Addition, a mathematical operation ADD model, a hypothesis in physics Agency for Defense Development, a South Korean national research and development agency Android Developer Day Androsta-1,4-diene-3,17-dione, an intermediate in hormone synthesis Architectural design document (or sometimes Architectural decision document), part of a software design document Automatic dropping device, a safety system for a pantograph Applied Digital Data Systems, an early manufacturer of terminals, later subdivision of NCR
Transport Adderley Park railway station, Birmingham, England Addis Ababa Bole International Airport in Addis Ababa City, Ethiopia
Other uses Associate Deputy Director of the Federal Bureau of Investigation, US government position Anti-dumping duties; see Dumping (pricing policy) Atatürkist Thought Association (Turkish: ), a Turkish secularism organization Avoid, Deny, Defend, a strategy for responding to active shooters Dzodinka language (ISO 639-3 code), a Niger-Congo language of Cameroon River Add, Scotland
See also Accidental death and dismemberment insurance (AD&D) Advanced Dungeons & Dragons, an edition of the game Dungeons & Dragons