ADD (disambiguation)
- A.D.D. (Audio Day Dream)
- ADD
- ADD model
- Accidental death and dismemberment insurance
- Active shooter training
- Adderley Park railway station
- Addis Ababa Bole International Airport
- Addition
- Agency for Defense Development
- Android Developer Day
- Androsta-1,4-diene-3,17-dione
- Associate Deputy Director of the Federal Bureau of Investigation
- Atatürkist Thought Association
- Automatic dropping device
- Cave World
- Dumping (pricing policy)
- Dzodinka language
- Hard to Swallow
- River Add
- SPARS code
- Steal This Album!