| ACT | A Contemporary Theatre 
| Others |
| ACT | Abolish Chronic Truancy
| Others |
| ACT | Absolute Character Tools
| Others |
| ACT | Absolute Constant Time
| Others |
| ACT | Abuse Counseling and Treatment
| Others |
| ACT | Academic, Creative, and Technical
| Others |
| ACT | Academy of Children's Theater
| Others |
| ACT | Acceptance and Commitment Therapy
| Others |
| ACT | Acceptance and Commitment TherapyWhat
| Others |
| ACT | Acceptance Commitment Therapy
| Others |
| ACT | Access Control Table
| Others |
| ACT | Access Control Toolkit
| Others |
| ACT | Access Coordination Team
| Others |
| ACT | Accord Club Thailand
| Others |
| ACT | Accountability and Credibility Together
| Others |
| ACT | Accountability, Communication, and Tracking
| Others |
| ACT | Accountability, Communication, and Training
| Others |
| ACT | Accountability, Cooperation, and Teamwork
| Others |
| ACT | Accredited Compaq Technician
| Others |
| ACT | Accurate, Complete, and Timely
| Others |
| ACT | Achievement, Commitment, and Talents
| Others |
| ACT | Acknowledge Care Tell
| Others |
| ACT | Acknowledge, Care, and Tell
| Others |
| ACT | Acoustic Ceiling Tile
| Others |
| ACT | Acoustical Ceiling Tile
| Others |
| ACT | Acquired Clear Thinking
| Others |
| ACT | Acting, Communicating, and Thinking
| Others |
| ACT | Acting, Creating, and Teaching
| Others |
| ACT | Action Changes Things
| Others |
| ACT | Action for Children's Television
| Others |
| ACT | Action! Presentation file
| Others |
| ACT | Activate
| Others |
| ACT | Activated Clotting Time
| Others |
| ACT | Activating Congregations for Transformation
| Others |
| ACT | Activator Context
| Others |
| ACT | Active Citizens Transform
| Others |
| ACT | Active Control of Torque
| Others |
| ACT | Active Control Technology
| Others |
| ACT | Active Cylinder Technology
| Others |
| ACT | Active Motion
| Others |
| ACT | Active Suspension Technology
| Others |
| ACT | Active Torque Split
| Others |
| Act | Acts of Apostles
| Others |
| ACT | Actual Cycle Time
| Others |
| ACT | Actualize Conscious Thought
| Others |
| ACT | Actuator
| Others |
| ACT | Adaptive Control of Thought
| Others |
| ACT | Adjustable Continence Therapy
| Others |
| ACT | Adobe Color Table
| Others |
| ACT | Adobe Photoshop Color Table
| Others |
| ACT | Adoption Care Transportation
| Others |
| ACT | Advance Civilian Team
| Others |
| ACT | Advanced Career Technologies
| Others |
| ACT | Advanced Career Training
| Others |
| ACT | Advanced Cell Technology
| Others |
| ACT | Advanced Cell Training
| Others |
| ACT | Advanced Chassis Technology
| Others |
| ACT | Advanced Clean Transportation
| Others |
| ACT | Advanced Client Technologies
| Others |
| ACT | Advanced Clutch Technology
| Others |
| ACT | Advanced Combat Tracker
| Others |
| ACT | Advanced Combustion Technology
| Others |
| ACT | Advanced Composite Technology
| Others |
| ACT | Advanced Computer Techniques
| Others |
| ACT | Advanced Computer Technologies
| Others |
| ACT | Advanced Computer Tutoring
| Others |
| ACT | Advanced Concepts and Technology
| Others |
| ACT | Advanced Control Technology
| Others |
| ACT | Advertising Community Together
| Others |
| ACT | Advocates for Cultural Talk
| Others |
| ACT | Advocating Change Together
| Others |
| ACT | Agents Council for Technology
| Others |
| ACT | AIDS Clinical Trials
| Others |
| ACT | Air Charge Temperature
| Others |
| ACT | Air Contract Transportation tag
| Others |
| ACT | Air Control Team
| Others |
| ACT | Air Cooled Triode
| Others |
| ACT | Airway Clearance Therapy
| Others |
| ACT | Akebono Ceramic Technology
| Others |
| ACT | Alaska Children's Trust
| Others |
| ACT | Albero a Camme in Testa
| Others |
| ACT | Alcor Cryotransport Technician
| Others |
| ACT | All Computer Technology
| Others |
| ACT | Allied Command Transformation
| Others |
| ACT | Alternative Clean Technology
| Others |
| ACT | Alternative Clean Transportation
| Others |
| ACT | Alternative Commute Transportation
| Others |
| ACT | Alternative Control Technique
| Others |
| ACT | Alternatives Consequences Think
| Others |
| ACT | Aluminium Cargo Trailers
| Others |
| ACT | Alumni Consulting Team
| Others |
| ACT | Always Crackin Trannys
| Others |
| ACT | Amazon Conservation Team
| Others |
| ACT | America Coming Together
| Others |
| ACT | American Canadian Tour
| Others |
| ACT | American Central Trucking Transport
| Others |
| ACT | American College of Theriogenologists
| Others |
| ACT | American College of Toxicology
| Others |
| ACT | American College Test
| Others |
| ACT | American College Testing
| Others |
| ACT | American Conservatory Theater
| Others |
| ACT | American Curriculum Test
| Others |
| ACT | Analysis Control Team
| Others |
| ACT | Anaplastic Carcinoma of the Thyroid
| Others |
| ACT | Anchorage Childrens Theatre
| Others |
| ACT | Animation Works Actor source code file (Graphics cell)
| Others |
| ACT | Anti Car Theft Campaign
| Others |
| ACT | Anti Crash Technology
| Others |
| ACT | AntiCoagulant Therapy
| Others |
| ACT | Antigomobilismo Clube de Tatui
| Others |
| ACT | Anxiety Chat Topics
| Others |
| ACT | Apple Certified Trainer
| Others |
| ACT | Application Center for Technology
| Others |
| ACT | Application Center Test
| Others |
| ACT | Application Compatibility Toolkit
| Others |
| ACT | Application Control Table
| Others |
| ACT | Applied Clinical Trials
| Others |
| ACT | Applied Computerized Telephony
| Others |
| ACT | Appoint Change and Terminate
| Others |
| ACT | Appointment Change and Termination
| Others |
| ACT | Architectural, Concert, and Theatrical
| Others |
| ACT | Arms Control Today
| Others |
| ACT | Arrest Car Thieves
| Others |
| ACT | Art, Culture, and Tunes
| Others |
| ACT | Artemis Comparison Tool
| Others |
| ACT | Artemisinin-based combination therapies
| Others |
| ACT | Arts, Culture, and Trade
| Others |
| ACT | ASLD Curriculum and Training
| Others |
| ACT | Assailant Control Techniques
| Others |
| ACT | Assertive Community Treatment
| Others |
| ACT | Associated Consultants and Trainers
| Others |
| ACT | Associates of Campus Theatre
| Others |
| ACT | Association Canadienne de Traductologie
| Others |
| ACT | Association Canadienne du Taxi
| Others |
| ACT | Association des Chauffeurs de Taxis
| Others |
| ACT | Association for Commuter Transportation
| Others |
| ACT | Association for Computers and Taxation (US)
| Others |
| ACT | Association for Contract Textiles
| Others |
| ACT | Association of Christian Truckers
| Others |
| ACT | Association of Classroom Teachers
| Others |
| ACT | Association of Consumers and Taxpayers
| Others |
| ACT | Association of Corporate Treasurers
| Others |
| ACT | Assurance Collection Tool
| Others |
| ACT | Asthma Control Test
| Others |
| ACT | Astrographic Catalog Tycho
| Others |
| ACT | Asynchronous Communication Terminal
| Others |
| ACT | At-risk Crime Tactics
| Others |
| ACT | Atacama Cosmology Telescope
| Others |
| ACT | Audi Club Taiwan
| Others |
| ACT | Audio Connect
| Others |
| ACT | Australia Central Time
| Others |
| ACT | Australian Capital Territory
| Others |
| ACT | Australian Central Time
| Others |
| ACT | Australian Competition Tribunal
| Others |
| ACT | Australian Contemporary Tap
| Others |
| ACT | Autism Care and Treatment
| Others |
| ACT | Autism Care Today
| Others |
| ACT | Auto Cross Team
| Others |
| ACT | Automated Credit Transfer
| Others |
| ACT | Automatic Carriage Transfer
| Others |
| ACT | Automatic Channel Targeting
| Others |
| ACT | Automatic Code Translation
| Others |
| ACT | Automatic Contact Tracking
| Others |
| ACT | Automatic Continuous Tuning
| Others |
| ACT | Automatically Controlled Transportation
| Others |
| ACT | Automobil Club Tingis
| Others |
| ACT | Automobile Club de Trooz
| Others |
| ACT | Automotive Cloud Technology
| Others |
| ACT | Automotive Coatings Technology
| Others |
| ACT | Automotive Configuration Tool
| Others |
| ACT | Automotive Core Tools
| Others |
| ACT | Automovil Club Tilisarao
| Others |
| ACT | Autonomic Computing Toolkit
| Others |
| ACT | Awakening Change Together
| Others |
| ACT | Canadian Association for Translation Studies
| Others |
| ACT | FoxPro Foxdoc Action Diagram
| Others |
| ACT | Microsoft Office Assistant ACTor file
| Others |
| ACT | Office Actor
| Others |
| ACT | Waco, Texas USA
| Others |