- ADIA stands for Abu Dhabi Investment Authority (United Arab Emirates)
- ADIA stands for Australian Drilling Industry Association
- ADIA stands for Abu Dhabi International Airport (United Arab Emirates)
- ADIA stands for Association of Dental Implant Auxiliaries (est. 1990)
- ADIA stands for Australian Dental Industry Association (est. 1925)
- ADIA stands for Australian Diagnostic Imaging Association (est. 1999; Victoria, Australia)
- ADIA stands for Association d’Experts Immobiliers Architectes (French architectural association)
- ADIA stands for Assistive Devices Industry Association (of Canada)
ADIA