| Acronym | Definition |
|---|
| BAI | Badminton Association of India |
| BAI | Body Adiposity Index (health measurement) |
| BAI | Beck Anxiety Inventory (Psychological Corporation) |
| BAI | British American Investment (Port Louis, Mauritius) |
| BAI | Basal Area Increment (trees) |
| BAI | Broadband Air Interface |
| BAI | Bank Administration Institute |
| BAI | Bureau of Animal Industry (Philippines) |
| BAI | Bankers Association of Illinois |
| BAI | Breaking All Illusions (song) |
| BAI | Battlefield Air Interdiction |
| BAI | Bundesverband Alternative Investments (German Association for Alternative Investments) |
| BAI | Board of Audit and Inspection (Republic of Korea) |
| BAI | Builders Association of India |
| BAI | Bank of America Investment Services, Inc. |
| BAI | Bureau Air Information (France) |
| BAI | Buenos Aires, Costa Rica (Airport code) |
| BAI | Basic Access Interface |
| BAI | Bosch Architectuur Initiatief (Dutch: Bosch Architecture Initiative; Netherlands) |
| BAI | Bland and Associates, Inc. |
| BAI | Balance after Insurance (healthcare) |
| BAI | Backup Aircraft Inventory |
| BAI | Business Advisers International (various locations) |
| BAI | Business Advisers, Inc. (various locations) |
| BAI | Bachrach Associates, Inc. (San Diego, CA) |
| BAI | Brest Avenir Immobilier (French: Brest Futures Real Estate; Brest, France) |
| BAI | Barcode Automation, inc. |
| BAI | Breath-Actuated Inhaler |
| BAI | Bell Alliances International, Inc (Mississauga, ON, Canada) |
| BAI | Building Alternatives, Inc. (New Hampshire) |
| BAI | Baccalaureus in Arte Ingeniaria (Bachelor of Engineering Science) |
| BAI | Battle Area Interdiction |
| BAI | Berg Adventures International (Canada) |
| BAI | Barometric Altitude Indicator |
| BAI | Bachelor of Applied Information Systems Technology |
| BAI | Baccalaureus Artium (Bachelor of Arts) |
| BAI | Blue Anchor Inc. |
| BAI | Baseband Audio Interface |
| BAI | Bearing Altitude Indicator |
| BAI | Beekeepers Association in Istog |
| BAI | Business Attributes Inventory (assessment) |
| BAI | Berman Associates Inc. (software/security consulting firm) |
| BAI | Broadbent & Associates, Inc. (Phoenix, AZ) |
| BAI | Black Alcoholism and Addiction Institute |