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International Taekwon-Do Federation (국제태권도연맹)
International Taekwon-Do Federation (국제태권도연맹, ITF), founded by General Choi Hong Hi in Seoul on 22 March 1966, is a federation of member associations in over 120 countries teaching original Taekwon-Do, distinct from Olympic World Taekwondo.
International Talk Like a Pirate Day
Talk Like a Pirate Day is a parodic holiday held each September 19, encouraging people to speak like pirates in phrases such as "Ahoy, matey!"
International tax planning
International tax planning: arranging cross-border business and income flows to reduce taxes legally, via transfer pricing, treaty shopping, and foreign subsidiaries; countered by OECD/G20 BEPS measures, the Two-Pillar Solution, and a global minimum tax for MNEs over EUR 750 million revenue.
International taxation
International taxation is the body of rules, treaties, and practices governing how cross-border income is taxed when two or more countries claim jurisdiction over the same taxpayer.
International Tchaikovsky Competition (Международный конкурс имени П. И. Чайковского)
International Tchaikovsky Competition (Международный конкурс имени П. И. Чайковского), quadrennial Russian classical music contest first held 1958; disciplines grew from piano and violin to cello, voice, and winds; XVII edition 2023, next 2027.
International Tea Day
International Tea Day (国际茶日), a UN observance on 21 May since resolution A/RES/74/241 (2019), led by FAO to honor tea's rural development role; also a separate 15 December tea-worker observance since 2005.
International Technology Roadmap for Semiconductors
The International Technology Roadmap for Semiconductors (ITRS) was a set of collaborative forecasts identifying technologies the global semiconductor industry would need, produced from 1998 to 2016.
International Telecommunication Regulations
The International Telecommunication Regulations are a binding ITU treaty setting principles for international telecommunication services, revised at the 2012 Dubai conference whose signing split 144 delegations 89 to 55.
International Telecommunication Service Numbers
International telecommunication service numbers are ITU-assigned number ranges giving one dialable number to a global service: freephone (+800), shared cost (+808), and premium rate (+979), reserved under the E.164 plan.
International Telecommunication Union
The International Telecommunication Union (ITU), founded in Paris in 1865 as the International Telegraph Union, is the UN specialized agency for telecommunications and ICTs, headquartered in Geneva, with 194 Member States, three sectors (ITU-R, ITU-T, ITU-D), and responsibility for radio spectrum, satellite orbits, and international telecom standards.
International Temperature Scale of 1990
The International Temperature Scale of 1990 (ITS-90) is the internationally adopted practical temperature scale defining how temperatures from 0.65 K upward are measured, adopted by the CIPM in 1989 and superseding IPTS-68.
International Tennis Federation
The International Tennis Federation is the global governing body of tennis, founded in Paris in 1913 and responsible for the Rules of Tennis, the Davis Cup, and Olympic tennis.
International Tennis Hall of Fame
International Tennis Hall of Fame (ITHF), Newport, Rhode Island museum and hall of fame founded 1954 by Jimmy Van Alen in the Newport Casino; 272 inductees from 28 countries, 75% vote threshold, Class of 2026 Roger Federer and Mary Carillo.
International Terrestrial Reference Frame
The International Terrestrial Reference Frame (ITRF) is a global set of station coordinates and velocities, published by the IERS, that realizes the International Terrestrial Reference System.
International Territorial Level
International Territorial Levels (ITLs) are the UK's statistical geography, replacing EU NUTS from 1 January 2021. Three levels (12 ITL1, 46 ITL2, 182 ITL3 areas) with defined population thresholds, reviewed roughly every three years by the ONS.
International Test Conference
The International Test Conference is an annual IEEE-affiliated conference on electronic testing of devices, boards, and systems, held since 1970 and known as the cornerstone of the TestWeek events.
International Testing Agency
International Testing Agency (ITA), Lausanne-based not-for-profit foundation created by the IOC in 2018; independently runs anti-doping testing, results management, and education for International Federations and the Olympic Games.
International Textile, Garment and Leather Workers' Federation
The International Textile, Garment and Leather Workers' Federation (ITGLWF) was a Brussels-based global union federation founded in 1970 from the ITGWF-ISLWF merger, claiming up to 10 million members, and dissolved in 2012 into IndustriALL Global Union.
International ties of the Democratic Socialists of America
The international ties of the Democratic Socialists of America cover its memberships in the Socialist International until 2017, the Progressive International, and the São Paulo Forum.
International Time Bureau
The International Time Bureau, also known as the Bureau International de l'Heure, coordinated Universal Time from the Paris Observatory from 1912 until its dissolution in 1987.
International Tin Council
The International Tin Council was the London-based body that administered the International Tin Agreements from 1956, defending tin prices until its 1985 collapse with £900 million in debts.
International trade
International trade, also called external trade, is the exchange of goods and services across national borders, worth about US$35.2 trillion in 2025 and governed by WTO agreements since 1948.
International Trade Centre
The International Trade Centre (ITC) is the joint agency of the World Trade Organization and UNCTAD, helping small and medium-sized enterprises trade through advisory services, training, and market analysis tools.
International Traffic in Arms Regulations
The International Traffic in Arms Regulations (ITAR) are United States regulations governing the export and import of defense articles and services, administered by the State Department's Directorate of Defense Trade Controls.
International Transgender Day of Visibility
International Transgender Day of Visibility (TDOV), held annually on March 31, was founded in 2009 by Rachel Crandall-Crocker of Transgender Michigan as a worldwide celebration of living transgender people, contrasting with the November 20 Transgender Day of Remembrance.
International Transport Forum
The International Transport Forum (ITF), created in 2006 from the European Conference of Ministers of Transport, is an OECD-hosted think tank for transport policy holding an annual summit of ministers in Leipzig.
International Transport Workers' Federation
The International Transport Workers' Federation (ITF) is an international trade union federation of transport workers' unions, founded in London in 1896 and representing over 4.5 million workers in 153 countries.
International Tribunal for the Law of the Sea
The International Tribunal for the Law of the Sea (ITLOS) is an international court in Hamburg, Germany, with 21 judges that decides disputes under the UN Convention on the Law of the Sea.
International Trucks
International Trucks is the commercial truck brand of International Motors, an American manufacturer of Class 4 through 8 trucks, diesel engines, and IC Bus school and commercial buses owned by TRATON.
International Tunnelling and Underground Space Association
The International Tunnels and Underground Space (ITA-AITES), also known as ITA, is a non-profit association founded in 1974 by nineteen nations to promote the tunnel profession globally.