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.
TikTok is an iOS and Android media app for creating and sharing short videos. The app was launched in 2017 by ByteDance, for markets outside of China.
Eldrick Tont "Tiger" Woods (born December 30, 1975) is an American professional golfer. He ranks second in both major championships and PGA Tour wins and also holds numerous records in golf.
Tina Turner (born Anna Mae Bullock, November 26, 1939) is an American-born Swiss singer, songwriter, and actress.
Timur (Persian: تیمور Temūr, Chagatai: Temür; 9 April 1336 – 18 February 1405), sometimes spelled Taimur and historically best known as Amir Timur or Tamerlane (Persian: تيمور لنگ Temūr(-i) Lang, "Timur the Lame"), was a Turco-Mongol Persianate conqueror.