| Acronym | Definition |
|---|
| ATP | After Tax Profit |
| ATP | Association of Tennis Professionals |
| ATP | Airline Transport Pilot |
| ATP | Adult Treatment Panel |
| ATP | Adenosine Triphosphate |
| ATP | Available To Promise |
| ATP | Association of Test Publishers |
| ATP | Australian Technology Park |
| ATP | Advanced Travel Partner |
| ATP | Australian Training Products |
| ATP | AppleTalk Transaction Protocol |
| ATP | Arbejdsmarkedets Tillægspension (Danish Labor Market Supplementary Pension Fund) |
| ATP | Automatic Train Protection (for rail signaling systems) |
| ATP | Automated Theorem Proving |
| ATP | Acceptance Test Procedure |
| ATP | Assistive Technology Practitioner (Credential offered by Rehabilitation Engineering and Assistive Technology, RESNA) |
| ATP | Anti-Tachycardia Pacing (advanced pacemaker function) |
| ATP | Antitachycardia Pacing (medical) |
| ATP | Angel Therapy Practitioner (spirituality) |
| ATP | Accredited Tax Preparer |
| ATP | Asociación de Tenistas Profesionales |
| ATP | Assistive Technology Partnership |
| ATP | Alberta Theatre Projects |
| ATP | Authorization to Proceed |
| ATP | Authorized Training Provider |
| ATP | Arbitrage Trading Program (investing) |
| ATP | Air Transport Pilot |
| ATP | Advanced Technology Partner |
| ATP | Acceptance Test Plan |
| ATP | Assistive Technology Partners |
| ATP | Arizona Telemedicine Program |
| ATP | Assistive Technology Project |
| ATP | Association for Transpersonal Psychology |
| ATP | Adaptation to Technical Progress |
| ATP | Associate in Transfer Partnership |
| ATP | Assume the Position |
| ATP | Automotive Testing Papenburg (Germany) |
| ATP | Authority To Proceed |
| ATP | Aircraft Type Rating |
| ATP | Annual Training Plan |
| ATP | Alternative Transients Program |
| ATP | After the Point |
| ATP | Ambient Temperature and Pressure |
| ATP | Autoimmune Thrombocytopenic Purpura |
| ATP | Aircrew Training Program |
| ATP | Adventure Tours Pakistan |
| ATP | Austrian Thermal Power |
| ATP | Authorization to Participate (food stamps) |
| ATP | Abuse Treatment Program |
| ATP | Agent Transfer Protocol |
| ATP | Advanced Turbo Prop |
| ATP | Allied Tactical Publication |
| ATP | Alaska Teacher Placement |
| ATP | Arlington Transportation Partners |
| ATP | Accelerated Training Program |
| ATP | Ammunition Transfer Point |
| ATP | Advanced Test Products |
| ATP | Alberta Taciuk Processor |
| ATP | Authorized to Proceed |
| ATP | Acquisition, Tracking & Pointing |
| ATP | Adult Tertiary Preparation |
| ATP | Application Transaction Program |
| ATP | Application Transaction Program (IBM) |
| ATP | Airline Transport Professionals, Inc. |
| ATP | Aberdeenshire Towns Partnership (UK) |
| ATP | Additional Training Period |
| ATP | Army Training Program |
| ATP | Asynchronous Transfer Protocol |
| ATP | All Tests Pass |
| ATP | American Technical Publishers Ltd. |
| ATP | Advanced Telecommunications Program |
| ATP | Applied Technology Professionals Ltd. |
| ATP | ALPS Tunneling Protocol (Cisco) |
| ATP | Army Teen Panel |
| ATP | Access Transport Parameter |
| ATP | Audio Technologies and Processing |
| ATP | Athletic Therapeutic Pilates |
| ATP | Air Terminal Publicity (Brussels South Charleroi Airport preferential partner) |
| ATP | Amman Trade Point |
| ATP | Allgemeine und Theoretische Psychologie |
| ATP | Aid Trade Provision |
| ATP | Approved Test Procedure |
| ATP | Allied Technical Publication |
| ATP | Avances Técnicos en Programación |
| ATP | All Tennis Professionals |
| ATP | Alternative Transportation Providers |
| ATP | Adaptive Threshold Processor (Kodak, Scanners) |
| ATP | Automated Test Procedure |
| ATP | Advanced Tracking Program |
| ATP | Advanced Tracking Prototype |
| ATP | Amkor Technology Philippines, Inc |
| ATP | Argenteuil Théâtre Public |
| ATP | Ariège Terre Promise |
| ATP | Absolute Time Processor |
| ATP | Allmän Tillägspension (old Swedish pension system) |
| ATP | After the Prom |
| ATP | Albert Torres Productions, Inc. (Los Angeles, CA) |
| ATP | Alaska Telemedicine Project |
| ATP | Advanced Technology Panel |
| ATP | Automated Test Plan |
| ATP | Art Trap Productions |
| ATP | Advanced Teacher Program |
| ATP | Antitampering Program |
| ATP | Auvergne Techniques de Pointe (French waterjet cutting company) |
| ATP | Agriculture and Theology Project |
| ATP | Aircraft Technical Publisher |
| ATP | Atmospheric Temperature Profile |
| ATP | Active Training Period |
| ATP | Ariadne Transparent Portal |
| ATP | A-town Pirates (band) |
| ATP | Ashes to Phoenix (band) |
| ATP | Accreditation Through Partnership (UK) |
| ATP | Acquisition, Tracking and Positioning |
| ATP | Automatic Pallet Changer (machine-tools accessory) |
| ATP | Architectural Trim Products |
| ATP | Asynchronous Terminal Processor |
| ATP | Alarm Transmit Process (ITI) |
| ATP | Ancillary Training Program |
| ATP | Arkansas Truth Project |
| ATP | Advanced Telecommunication Platform (Nortel) |
| ATP | Antiterrorism Program |
| ATP | Associate Teachers Programme (UK) |
| ATP | Acier, Tubes, Profils |
| ATP | Advanced Training Technologies Project |
| ATP | Advanced Technological Products, Inc. |
| ATP | Attitude Prediction |
| ATP | Air Transferred Pollutants/Particles |
| ATP | Aircraft Target Processor |
| ATP | AT&T/Philips Telecommunications |
| ATP | Authorization To Produce |
| ATP | Association Terrariophile du Poitou (French: Reptile Association of Poitou; Poitou, France) |
| ATP | Advice Training Promotion |
| ATP | Answers to Private |
| ATP | Attainment to Plan (US DoD) |
| ATP | Accelerated Transport Protocol (Altarus Corporation) |
| ATP | Automated Task Profiling |
| ATP | Action Tactical Products |
| ATP | Agricultural Technology and Poverty |
| ATP | Atta, Pudatol (SIL code, Philippines) |
| ATP | Anderson Technical Publishing, LLC |
| ATP | Atlanta Trading Post |
| ATP | Automated Telecommunications Program |
| ATP | Abbreviated Training Program |
| ATP | Advanced Tactical PATRIOT |
| ATP | Association Tarbaise de Poker (French: Tarbes Poker Association; Tarbes, France) |
| ATP | Assignment Type Problem |
| ATP | Automatic Transaction Posting |
| ATP | Autorisation de Travail Provisoire (French: Temporary Employment Authorization) |
| ATP | Automatic Telecommunications Program |
| ATP | Aggressive Tax Planning (various locations) |
| ATP | Active Trader Pro (software) |
| ATP | Advanced Targeting Pod |
| ATP | Advanced Technology Program (NIST) |
| ATP | Aged to Perfection |
| ATP | Accredited Training Provider |
| ATP | All Things Pakistan |
| ATP | Area to Protect |
| ATP | All Tomorrow's Parties |
| ATP | Approval to Proceed (various organizations) |
| ATP | Athletic Training Program (various schools) |
| ATP | Access to Patients |
| ATP | Automated Trading Program (finance) |