| ABAC | Abraham Baldwin Agricultural College 
| Others |
| ABAC | Adaptive Binary Arithmetic Coding
| Others |
| ABAC | Ahead By A Century
| Others |
| ABAC | Akhil Bharatiya Aman Committee
| Others |
| ABAC | Alcohol Beverages Advertising Code
| Others |
| ABAC | Alcoholic Beverages Advertising Code
| Others |
| ABAC | Aligning Business And Customers
| Others |
| ABAC | American Bioethics Advisory Commission
| Others |
| ABAC | American Board of Accredited Certifications
| Others |
| ABAC | Anti Bribery and Anti Corruption
| Others |
| ABAC | Anti Bribery And Corruption
| Others |
| ABAC | Anti Bribery Anti Corruption
| Others |
| ABAC | Antiquarian Booksellers Association of Canada
| Others |
| ABAC | Antiquarian Booksellers' Association of Canada
| Others |
| ABAC | Antonio Balma Air Compressors
| Others |
| ABAC | APEC (Asia Pacific Economic Cooperation) Business Advisory Council
| Others |
| ABAC | APEC Business Advisory Council
| Others |
| ABAC | Applied Behavior Analysis Center
| Others |
| ABAC | Arlington Bicycle Advisory Committee
| Others |
| ABAC | Association de la Librairie Ancienne du Canada
| Others |
| ABAC | Association of Business Administrators of Christian
| Others |
| ABAC | Association of Business and Administrative Computing
| Others |
| ABAC | Assumption Business Administration College
| Others |
| ABAC | Atlanta Broadcast Advertising Club
| Others |
| ABAC | Attribute based access
| Others |
| ABAC | Attribute Based Access Control
| Others |
| ABAC | Attribute-Based Access Control
| Others |
| ABAC | Attributed Based Access Control
| Others |
| ABAC | Authorization Based Access Control
| Others |
| ABAC | Auto Body Association of Connecticut
| Others |
| ABAC | Aviation Boatswain's Mate (airship Rigger) Chief Petty Officer
| Others |