ADD (disambiguation)

ADD, or attention deficit disorder, is a former name for attention deficit hyperactivity disorder.

Add or ADD may also refer to:

• "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

• 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

• Adderley Park railway station, Birmingham, England
• Addis Ababa Bole International Airport in Addis Ababa City, Ethiopia

• Associate Deputy Director of the Federal Bureau of Investigation, United States government position
• Anti-dumping duties; see Dumping (pricing policy)
• Atatürkist Thought Association (Turkish: Atatürkçü Düşünce Derneği), 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

• Accidental death and dismemberment insurance (AD&D)
• Advanced Dungeons & Dragons, an edition of the game Dungeons & Dragons