| Acronym | Definition |
|---|
| TIA | Thanks In Advance |
| TIA | Terrorism Information Awareness (US DARPA program; formerly Total Information Awareness) |
| TIA | Telecommunications Industry Association |
| TIA | Total Information Awareness (US DARPA program; now Terrorism Information Awareness) |
| TIA | Transient Ischemic Attack |
| TIA | Toy Industry Association, Inc. |
| TIA | Tire Industry Association |
| TIA | Totally Integrated Automation (Siemens AG) |
| TIA | Travel Industry Association of America |
| TIA | Tampa International Airport |
| TIA | That Is All (internet slang) |
| TIA | The Intellectual Activist |
| TIA | Transimpedance Amplifier |
| TIA | Telecommunications and Information Administration |
| TIA | Take It Away |
| TIA | Trust Indenture Act of 1939 |
| TIA | Traffic Impact Analysis |
| TIA | Tucson International Airport |
| TIA | The Interfaith Alliance |
| TIA | Tentative Interim Amendment |
| TIA | Tribhuvan International Airport (Nepal) |
| TIA | This Is Africa (movie) |
| TIA | The Internet Adapter |
| TIA | Thanks in Anticipation |
| TIA | Truth In Advertising |
| TIA | Type Inspection Authorization |
| TIA | Tortilla Industry Association |
| TIA | Tulsa International Airport |
| TIA | Time Interval Analyzer |
| TIA | Technology Industries Association |
| TIA | Terminologie et Intelligence Artificielle |
| TIA | Tax Injunction Act |
| TIA | Technology Investment Agreement |
| TIA | Television Interface Adaptor (chip found in old Atari consoles) |
| TIA | Traffic Improvement Association |
| TIA | Terrorism Information Awareness System |
| TIA | Tournament Indoor Association (color guard group) |
| TIA | Tobacco Institute of Australia |
| TIA | This Is Anfield (fanzine website) |
| TIA | This Is Awkward |
| TIA | Tourism Industry Association of New Zealand (also seen as TIANZ) |
| TIA | Takings Impact Assessment (Texas Department of Transportation) |
| TIA | Temporary Insurance Agreement |
| TIA | The Insurance Application (Denmark) |
| TIA | That Is Alright |
| TIA | Tirana, Albania - Rinas (Airport Code) |
| TIA | Temporary Investigative Authority |
| TIA | Transparency International Australia |
| TIA | Tecnicos en Investigación Aeroterraquea (Spanish comic book) |
| TIA | Tohoku Internet Association (Japan) |
| TIA | Techniques Industrielles Appliquées (French: Applied Industrial Technologies) |
| TIA | Training Impact Analysis |
| TIA | Technical Interest Area |
| TIA | Terminal Indicate Assignment |
| TIA | Technology Information Advisor |
| TIA | Talking in Acronyms |
| TIA | Technical Interface Agreement |
| TIA | Transparency In Armaments agreement |
| TIA | Tactical Interface Adapter |
| TIA | Teknoland Internet Agency |
| TIA | Test Interface Assembly |
| TIA | Total Inactive Aircraft |
| TIA | Telescope and Instrument Assembly |
| TIA | Technology Integration & Application |
| TIA | Temperature Indicating Alarm |
| TIA | Texas Indoor Advertising |
| TIA | Team Instant Action (gaming) |