Time 100 is an annual list of the 100 most influential people in the world, as assembled by Time. First published in 1999 as a result of a debate among several academics, the list has become an annual event.

The list was started with a debate at a symposium in Washington, D.C., on February 1, 1998, with panel participants CBS news anchor Dan Rather, historian Doris Kearns Goodwin, former New York governor Mario Cuomo, then–political science professor Condoleezza Rice, neoconservative publisher Irving Kristol and Time managing editor Walter Isaacson.

The list was first published in 1999, when Time magazine named the 100 most influential people of the 20th century. Based on the popularity of the installment, in 2004 Time magazine decided to make it an annual issue, listing the 100 people most influencing the world. Making the list is frequently mistaken as an honor; however, Time makes it very clear that people are recognized for changing the world, for better or for worse. Those recognized fall in one of five categories: Leaders & Revolutionaries, Builders & Titans, Artists & Entertainers, Scientists & Thinkers, and Heroes & Icons. Within each category, the 20 most influential people (sometimes pairs or small groups) are selected, for a grand total of 100 each year.