| Acronym | Definition |
|---|
| ACTS | African Centre for Technology Studies |
| ACTS | Advanced Communications Technologies and Services |
| ACTS | Advanced Communications Technology Satellite |
| ACTS | Action of Churches Together in Scotland (UK) |
| ACTS | Automated Computer Time Service |
| ACTS | Advanced CompuTational Software |
| ACTS | Adoration Confession Thanksgiving Supplication (prayer guideline) |
| ACTS | Air Corps Tactical School |
| ACTS | Advisory Committee on Toxic Substances |
| ACTS | Air Combat Training System |
| ACTS | Advanced Communications Technologies Services |
| ACTS | Automated Coin Toll Service |
| ACTS | Automated Case Tracking System |
| ACTS | Advanced Crew Transportation System (Russian Soyuz spacecraft model) |
| ACTS | Alcohol Chemical Treatment Series |
| ACTS | Activating Children's Thinking Skills |
| ACTS | Amazon Conservatory for Tropical Studies |
| ACTS | Aegis Combat Training System |
| ACTS | Asbestos Contractor Tracking System |
| ACTS | Automatic Coin Telephone Service |
| ACTS | Adoration, Contrition, Thanksgiving, Supplication |
| ACTS | Automatic Coin Telephone System |
| ACTS | Adoration Community Theology Service |
| ACTS | Abundant Care Training Services (Detroit, MI) |
| ACTS | American Council for Trade in Services |
| ACTS | American Coalition for Traffic Safety, Inc. |
| ACTS | Army Compliance Tracking System |
| ACTS | Appeals Case Tracking System |
| ACTS | Advanced Civil Transport Simulator |
| ACTS | Acoustic Control and Telemetry System |
| ACTS | Agency Check Tracking System |
| ACTS | Adaptive Computerized Training System |
| ACTS | Aboriginal Christian Training Services (Tweed Heads, New South Wales, Australia) |
| ACTS | Association of Competitive Telecommunications Suppliers (Canada) |
| ACTS | All-Channel Television Society |
| ACTS | Automatic Computer Telex Service |
| ACTS | Automated Compatibility Test System (CTL/GSFC/NASA) |
| ACTS | Attorney-Client Trust Scale |
| ACTS | Automated Circuit Test System |
| ACTS | Accountability, Controllability, and Traceability System |
| ACTS | Association of Cable Television Suppliers |
| ACTS | Automated Communication Telemanagement System |
| ACTS | Automated Communications Test System |
| ACTS | Adjustable Convertible Trust Security |
| ACTS | Automated COSAL Tracking System |
| ACTS | Adventists Commissioned to Train Servants for Christ (Canada) |
| ACTS | Advanced Extremely-High-Frequency COMSEC/TRANSEC System (NSA) |
| ACTS | Automatic Cloud Tracking System |
| ACTS | Automated Configuration Tracking System |
| ACTS | Association pour les Cardio-Transplantés de Strasbourg |
| ACTS | Association of Clerical Technical Staffs |
| ACTS | Assignment/Correspondence Tracking System |
| ACTS | Apache Crew Trainer System |
| ACTS | Automated Centralized Telemanagement System |
| ACTS | Affimex Customs and Trade Services (Canada) |
| ACTS | Automated CDRL and Tracking System |
| ACTS | American Countryside Tourism Strategies |
| ACTS | Acquisition Control & Tracking System |