TAI

Three letter acronym TAI may refer to:

• IATA airport code for Ta'izz International Airport
• ICAO code for TACA International Airlines
• Transports Aériens Intercontinentaux, a now defunct French airline
• International Atomic Time (Temps Atomique International)
• Tai languages (ISO 639 alpha-3, tai)
• Takemusu Aiki Intercontinental an Aikido organization
• Technology Achievement Index, a composite measure of technological progress that ranks countries on a comparative global scale
• Television Information Agency (Telewizyjna Agencja Informacyjna) - part of TVP - Poland's public television broadcasting corporation
• The Academy Is..., a rock band
• The Australia Institute, a leftwing think tank
• Toshiba America, Inc.
• Trust Association Interceptor, a computer security mechanism usually related to the World Wide Web
• Turkish Aerospace Industries, Inc (TUSAŞ Havacılık ve Uzay Sanayi A.Ş.)
• 5-Trifluoromethyl-2-aminoindan, a psychoactive drug and serotonin releasing agent
• Technical analysis indicator