TIA most commonly refers to the transient ischemic attack, a "mini-stroke". TIA or Tia may also refer to:

People

* Tia (name), including a list of people and fictional characters with the given name or surname * TiA, stage name of a female Japanese singer (born 1987) * Tia (singer), stage name of a 21st century female Japanese singer * Tia (Māori explorer) (), early Māori explorer and chief * Tia (princess) an ancient Egyptian princess of the 19th Dynasty * Tia (overseer of treasury), ancient Egyptian official, husband of Princess Tia

Science and technology

* Tia (moth), ''Tia'' (moth), a genus of moths in the family Tortricidae * Transimpedance amplifier, a type of current-to-voltage converter * Television Interface Adaptor, a custom chip for the Atari 2600 game console * The Internet Adapter, 1993 software created by Cyberspace Development * Totally Integrated Automation, a 1996 Siemens organisational concept

Aviation

* Tampa International Airport, US, IATA code TPA * Texas International Airlines, US, ICAO code * Tirana International Airport Nënë Tereza, Albania, IATA code * Trans International Airlines, former U.S. airline company * Tribhuvan International Airport (IATA code: KTM), Kathmandu, Nepal * Trivandrum International Airport (IATA code: TRV), Thiruvananthapuram, Kerala, India * Tucson International Airport (IATA code: TUS), Arizona, US * Tan Son Nhat International Airport, (IATA code: SGN), Ho Chi Minh City, Vietnam

Business and government

* Tía, a South American supermarket chain based in Ecuador * Telecommunications Industry Association, US * Total Information Awareness or Terrorism Information Awareness Program, US * Transparency in Armaments, UN initiative * Trust Indenture Act of 1939, US

Places

* Tia, New South Wales, a settlement and parish in Australia * Tia, Burkina Faso, a village in the Siglé Department of Boulkiemdé Province * Tia, Fiji, a village of Motusa in Fiji * Tia, Leh, a village in India

Arts and entertainment

* "T.I.A.", a song in the album ''Troubadour (K'naan album), Troubadour'' by K'naan * Tia, a Diva Starz doll * T.I.A., a secret spy agency from Spanish comic series ''Mort & Phil'' ()

Other uses

* Tia (goddess), a goddess in the Haida religion * ''The Intellectual Activist'', American monthly Objectivist magazine * Tournament Indoor Association, a division of Tournament of Bands, US