| Acronym | Definition |
|---|
| ACSS | Avaya Certified Support Specialist (computer products) |
| ACSS | Academy of Social Sciences (UK) |
| ACSS | American College of Spine Surgery |
| ACSS | Africa Center for Strategic Studies |
| ACSS | Antichrist Superstar (Marilyn Manson album) |
| ACSS | Aluminum Conductor Steel Supported (cable) |
| ACSS | African Crop Science Society |
| ACSS | Aviation Communication and Surveillance Systems |
| ACSS | Aircraft Sustainment Squadron |
| ACSS | Association of Computer Support Specialists |
| ACSS | Association Canadienne des Soins de Santé (Canadian Healthcare Association) |
| ACSS | Antilles Consolidated School System |
| ACSS | Aural Cascading Style Sheet |
| ACSS | Analog Computer Subsystem |
| ACSS | Advisory Council on Social Security |
| ACSS | Advanced Cadet Staff Seminar |
| ACSS | Air Combat and Surveillance System |
| ACSS | American Cheviot Sheep Society |
| ACSS | Association Colmarienne Sauvetage-Secourisme (French: Colmar-Rescue Association Aid; Colmar, France) |
| ACSS | Army Combat Service Support |
| ACSS | Air Crew Survivability System |
| ACSS | Antenna Control Subsystem |
| ACSS | Automated Cryptologic Surveillance System |
| ACSS | Alarm Central Security Systems |
| ACSS | Automation and Control System Solutions |
| ACSS | Averaged Current-Sharing Strategy |
| ACSS | Automated Checkout Satellite Simulation |