Tetsuya Theodore "Ted" Fujita (?? ??, Fujita Tetsuya, October 23, 1920 – November 19, 1998) was a prominent Japanese-American severe storms researcher.
His research at the University of Chicago on severe thunderstorms, tornadoes, hurricanes, and typhoons revolutionized the knowledge of each.
Although he is best known for creating the Fujita scale of tornado intensity and damage., he also discovered downbursts and microbursts, and was an instrumental figure in advancing modern understanding of many severe weather phenomena and how they affect people and communities, especially through his work exploring the relationship between wind speed and damage.