| Acronym | Definition |
|---|
| TAP | Air Portugal (ICAO code) |
| TAP | The American Prospect |
| TAP | Teacher Advancement Program |
| TAP | Tuition Assistance Program |
| TAP | Technical Assistance Program |
| TAP | Transition Assistance Program |
| TAP | Technology Assistance Program |
| TAP | Taxpayer Advocacy Panel |
| TAP | Test Access Port |
| TAP | Tandem Affinity Purification |
| TAP | Take A Pill |
| TAP | Technical Advisory Panel |
| TAP | Taxpayer Assets Project |
| TAP | The Ada Project |
| TAP | Transportes Aéreos Portugueses (Air Portugal) |
| TAP | troopship (US DoD) |
| TAP | Telocator Alphanumeric Protocol |
| TAP | Transactions on Antennas and Propagation (IEEE) |
| TAP | Tag Acquisition Processor (radio frequency identification; Reva Systems) |
| TAP | The Automation Partnership |
| TAP | Tuition Account Program (tuition pre-payment program) |
| TAP | Toxic Air Pollutant |
| TAP | Transboundary Air Pollution |
| TAP | Tumor Activated Prodrug |
| TAP | Tests of Achievement and Proficiency |
| TAP | Tight Ass Pants (preppy slang) |
| TAP | Terminal Access Controller |
| TAP | Telecommunications Access Program |
| TAP | Transportadora Aérea Portuguesa (Portuguese flight operator) |
| TAP | Travel Assistance Program (Canada) |
| TAP | Transferred Account Procedure (GSM) |
| TAP | Tau Alpha Pi (Engineering Technology honor society) |
| TAP | Telocator Alphanumeric Input Protocol |
| TAP | Technology Assurance Plan (CompUSA stores) |
| TAP | The Army Plan |
| TAP | Terminal Area Productivity (aviation) |
| TAP | Total Audience Plan |
| TAP | Theta Alpha Phi (theatre honors fraternity) |
| TAP | The Amazing Pudding (Pink Floyd fanzine) |
| TAP | The American Psychoanalyst (journal) |
| TAP | Tapachula, Chiapas, Mexico - Tapachula International (Airport Code) |
| TAP | Teacher Advisory Program |
| TAP | Traditional Approval Process |
| TAP | Technology Area Plan |
| TAP | Toxicological Agent Protective |
| TAP | Television Audio Processing |
| TAP | Technological American Party (later to become the Technological Assistance Program; was originally YIPL) |
| TAP | Test Access Path (DSC) |
| TAP | Trend Analysis Program (NAIC program) |
| TAP | Tachyon Access Point (Tachyon, Inc. satellite ISP) |
| TAP | Transesophageal Atrial Pacing |
| TAP | Technician Apprenticeship Program |
| TAP | Transversus Abdominis Plane (anatomical landmark for anaesthetic technique) |
| TAP | Test and Packaging |
| TAP | The Anglican Planet (news journal) |
| TAP | To Approved Purchasers |
| TAP | Training Accreditation Program |
| TAP | Total Accounts Payable |
| TAP | Telecommunication Assistance Program |
| TAP | Transmission Adaptive Pressure (General Motors) |
| TAP | Temperature-Acceleration-Pressure Tool (well logging tools for scientific drilling and oil exploration) |
| TAP | Task Action Plan |
| TAP | Two-Step Approval Process |
| TAP | Thinking-Aloud Protocol |
| TAP | Test Article Preparation |
| TAP | Toshiba Access Panel (Toshiba) |
| TAP | Training Allowance Pool |
| TAP | Treatment Advocacy Program |
| TAP | Time-Sharing Assembly Program |
| TAP | The Aker Partners (Washington, DC) |
| TAP | Theater Air Planning |
| TAP | Telecommunications Advocacy Project |
| TAP | Triallyl Phosphate |
| TAP | Technology Advantage Program |
| TAP | Total Assets Protection (Sprint) |
| TAP | Theater Air Planner |
| TAP | Tank Advisory Panel |
| TAP | Total Audience Package |
| TAP | Technical Architecture Plan |
| TAP | The Association for Pool, Inc |
| TAP | Tarification À la Pathologie |
| TAP | Technical Analysis Platform (Telcordia) |
| TAP | Teaching Apparatus for Physics |
| TAP | Tariff Analysis Project |
| TAP | Technical Activity Proposal (NATO) |
| TAP | Total Annualized Premium |
| TAP | T1 Access Partitioning (Sprint) |
| TAP | Terrain Analysis Product |
| TAP | Technology Assistance Plan |
| TAP | The Aerospace Players |
| TAP | Task Assignment Plan |
| TAP | Test and Proofs |
| TAP | Table-Driven Aborting Protocol |
| TAP | Turun Asennuspaja (Finnish electric company) |
| TAP | Transition Aviation Project |
| TAP | TPED Assessment Process |
| TAP | Text Access Point (PCIA) |
| TAP | Technology Application Plan |
| TAP | Timing and Acquisition Processor |
| TAP | Turkiye Aile Sagligi ve Planlamasi (Turkish Family Health and Planning Foundation) |
| TAP | Target Advisory Panel |
| TAP | Technology Assistance Professional |
| TAP | Telecomputing Applications Platform |
| TAP | Tariff Assurance Plan (AT&T) |
| TAP | Thermoacoustic Projector |
| TAP | Test Architecture & Planning (Sprint) |
| TAP | Transmitter Antenna Polarization |
| TAP | Trans Anadolu Ham Petrol Boru Hatti Projesi (Turkish: Trans-Anatolian Crude Oil Pipeline Project) |
| TAP | Tandem Application Portal |
| TAP | Tactical Air Party |
| TAP | Target Assessing Panel |
| TAP | Tasking/Processing/Exploitation/Dissemination Assessment Process |
| TAP | Technical/Technology Assessment Phase |
| TAP | Technology Assistance Person |
| TAP | Targeted Acoustical Products (hybrid acoustic insulator; trademark of Cascade Engineering) |
| TAP | Transient Acoustic Processor |
| TAP | Trident Assignment Program |
| TAP | Task Area Plan |
| TAP | Taxpayer Advocacy Program |
| TAP | Team Action Process |
| TAP | Technical Analysis/Analyst Position |
| TAP | Timed Athletic Performance |
| TAP | Technique Architectural Products, Inc. (Pittsburgh, PA) |