TI, ti, and variants may refer to:
A time zone is a region of the globe that observes a uniform standard time for legal, commercial, and social purposes.
The Tiananmen Square protests of 1989, commonly known in mainland China as the June Fourth Incident (六四事件), were student-led demonstrations in Beijing, the capital of the People's Republic of China, in 1989. More broadly, it refers to the popular national movement inspired by the Beijing protests during that period, sometimes called the '89 Democracy Movement (八九民运).
Eldrick Tont Woods (born December 30, 1975) better known as Tiger Woods, is an American professional golfer who is among the most successful golfers of all time.
Timur (Persian: تیمور Temūr, Chagatai: Temür; 9 April 1336 – 18 February 1405), historically known as Amir Timur and Tamerlane (Persian: تيمور لنگ Temūr(-i) Lang, "Timur the Lame"), was a Turco-Mongol conqueror.
Tides are the rise and fall of sea levels caused by the combined effects of the gravitational forces exerted by the Moon and the Sun and the rotation of Earth.
Elizabeth Stamatina "Tina" Fey (; born May 18, 1970) is an American actress, comedian, writer, producer and playwright.