TIA (disambiguation)
- Diva Starz
- Motusa
- Siemens
- T1A (disambiguation)
- TLA (disambiguation)
- Tampa International Airport
- Tan Son Nhat International Airport
- Telecommunications Industry Association
- Television Interface Adaptor
- Texas International Airlines
- The Intellectual Activist
- The Internet Adapter
- TiA
- Tia (Māori explorer)
- Tia (goddess)
- Tia (moth)
- Tia (name)
- Tia (overseer of treasury)
- Tia (princess)
- Tia (singer)
- Tia, Burkina Faso
- Tia, Leh
- Tia, New South Wales
- Tias (disambiguation)
- Tirana International Airport Nënë Tereza
- Total Information Awareness
- Tournament of Bands
- Trans International Airlines
- Transient ischemic attack
- Transimpedance amplifier
- Transparency in Armaments
- Tribhuvan International Airport
- Trivandrum International Airport
- Troubadour (K'naan album)
- Trust Indenture Act of 1939
- Truth in Accounting
- Tucson International Airport
- Tía