| Acronym | Definition |
|---|
| TPA | Third Party Administrator |
| TPA | Tissue Plasminogen Activator |
| TPA | Trade Practices Act (Australia) |
| TPA | Tonnes Per Annum |
| TPA | Trade Promotion Authority (international trade negotiating) |
| TPA | Third Party Access (gas industry) |
| Tpa | Treponema Pallidum |
| TPA | Terephthalic Acid |
| TPA | Trading Partner Agreement |
| TPA | Toronto Port Authority |
| TPA | Tri-Party Agreement |
| TPA | Total Plate Appearances (baseball) |
| TPA | Two-Photon Absorption |
| TPA | Traffic Pattern Altitude |
| TPA | Traffic Pattern Altitude (aviation) |
| TPA | Teacher Performance Assessment |
| TPA | Trees Per Acre |
| TPA | Texture Profile Analysis |
| TPA | Third-Party Claims Administrator (insurance) |
| TPA | Turbo Package Analyzer (trademark of Ansoft, LLC) |
| TPA | Tenant Protection Act (replaced Landlord and Tenant Act, Ontario, Canada) |
| TPA | Tube & Pipe Association, International |
| TPA | Tax Payers' Alliance (UK) |
| TPA | Triphenylamine |
| TPA | Tempat Pembuangan Akhir (Indonesian) |
| TPA | Televisão Publica de Angola (Portuguese: Angolan Public Television) |
| TPA | Tetradecanoylphorbol Acetate |
| TPA | Transient Program Area |
| TPA | Third Party Annotation |
| TPA | Transfer of Physical Assets |
| TPA | Toronto Police Association |
| TPA | Toronto Parking Authority |
| TPA | Terminal Position Assurance (electrical assembly) |
| TPA | Thermal Polyaspartate |
| TPA | Technical Practice Aid |
| TPA | Travelers Protective Association |
| TPA | Third Party Agreement |
| TPA | Telephone Pioneers of America |
| TPA | Total Professeurs Associés (French: Total Associate Professors) |
| TPA | Triple Play Analyzer (Agilent Technologies) |
| TPA | Thermal Protective Aid (survival suit) |
| TPA | Tampa, FL, USA - Tampa International (Airport Code) |
| TPA | Trespass to Property Act |
| TPA | Total Petroleum Hydrocarbons |
| TPA | Texas Produce Association |
| TPA | Technologie et Partenariat en Agroalimentaire |
| TPA | Total Package Approach |
| TPA | Third Party Assessment (various organizations) |
| TPA | Thermal Plasma Analyzer |
| TPA | Total Plaque Area |
| TPA | Ten Pin Alley (bowling game) |
| TPA | Transmit Power Amplifier (Pirelli) |
| TPA | Teachers' Pension Agency (UK) |
| TPA | Thieves Per Acre (gaming) |
| TPA | Turbopump Assembly |
| TPA | Protocol Address of the Target |
| TPA | Triangle Photographers Association |
| TPA | Timber Producers Association of Michigan and Wisconsin |
| TPA | Texas Pharmaceutical Association |
| TPA | Trusted Parallel Application |
| TPA | Technology Program Annex |
| TPA | Test Planning Analysis |
| TPA | Technology Planning Annex |
| TPA | Tiers Payant Assistance (French: Third-Party Payment) |
| TPA | Track Production Area |
| TPA | Terminal Privilege Authority |
| TPA | Transponder Performance Analyzer |
| TPA | Trial Preparation Assistant (Law) |
| TPA | Test Project Agreement |
| TPA | Transaction Processing Activity |
| TPA | Travel by Privately Owned Conveyance is Authorized |
| TPA | Trigger Pulse Amplifier |
| TPA | Transportation by Personal Auto |
| TPA | Tissular Polypeptide Antigen (tumoral marker) |
| TPA | Touring Pédestre Annécien (French walking tour) |
| TPA | Transient Personnel Activity |
| TPA | Transmit Phased Array |
| TPA | Transmit Power Allocation |
| TPA | Transuranic Package Area |
| TPA | Truncated Periodic Array |
| TPA | Transfer Prohibited Acknowledgement signal (CCS #7/ITU-T) |
| TPA | Thiefs Per Acre (Utopia game) |
| TPA | Training Partnership Agreement |
| TPA | Tactical Planning Application (Bellcore) |
| TPA | Tuned Power Amplifier |
| TPA | Theta Phi Alpha (women's fraternity) |
| TPA | Tampa Port Authority (Tampa, FL) |
| TPA | Tempe Preparatory Academy (Tempe, AZ) |
| TPA | Third Party Approval (contracts) |
| TPA | Third Party Auditor |
| TPA | Technology Promotion Association (Thailand and Japan) |