TIA
TIA or Tia may refer to:

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

Geography
Tia, Burkina Faso, a village in the Siglé Department of Boulkiemdé Province
Tia, New South Wales, a settlement and parish in Australia
Tia, Fiji, a village of Motusa in Fiji
Tia-ye Olya, a village in Iran
Tia-ye Sofla, a village in Iran
Tia, Leh, a village in India

Literature and arts
Tia and Megumi Oumi, characters in the anime and manga series Zatch Bell!
The Intellectual Activist, American monthly Objectivist magazine
Tia, a character in the French TV series Galactik Football
"T.I.A.", a song by K'naan in the album Troubadour
Tournament Indoor Association, a division of Tournament of Bands, US
Tia, a Diva Starz doll
T.I.A., a secret spy agency from Spanish comic series Mort & Phil (Spanish: Mortadelo y Filemón)

People
TiA (born 1987), female Japanese singer
Tia (singer), female Japanese singer
Tia (Maori explorer), early Māori explorer and chief
Tia (princess) an ancient Egyptian princess during the 19th dynasty
Tia (overseer of treasury), ancient Egyptian official, husband of Princess Tia
Tia (name), people with the given name or surname

Technology
Transimpedance amplifier, a type of current-to-voltage converter
Television Interface Adaptor, custom chip that is the heart of the Atari 2600 game console
The Internet Adapter, 1993 software created by Cyberspace Development

Other uses
Tia (goddess), a goddess in the Haida religion
Tia (moth), a genus of moths in the family Tortricidae
Transient ischemic attack, a "mini-stroke"