Travis Cordell Kalanick (/ˈkælənɪk/; born August 6, 1976) is an American businessman best known as the co-founder and former chief executive officer (CEO) of Uber. Previously he worked for Scour, a peer-to-peer file sharing application company, and was the co-founder of Red Swoosh, a peer-to-peer content delivery network that was sold to Akamai Technologies in 2007. He is currently CEO of Atoms, which owns CloudKitchens, operator of ghost kitchens.

Kalanick was CEO of Uber from 2010 to 2017. He resigned from Uber in 2017 after growing pressure from allegations that he ignored reports of sexual harassment at the company. Kalanick retained his seat on the board of directors until he gave it up on December 31, 2019. Before he resigned, Kalanick sold approximately 90% of his shares in Uber for $2.5 billion.

Kalanick is ranked 374th on the Forbes 400 list of richest Americans, with a net worth of $3.6 billion.

In 2018, Kalanick started the 10100 Fund to invest in e-commerce, innovation and real estate in emerging markets such as China and India. That same year, Kalanick announced an investment of nearly $150 million in real estate redevelopment company City Storage Systems (renamed to Atoms); he also announced that he would be its CEO.

Kalanick was born on August 6, 1976, and grew up in the Northridge neighborhood of Los Angeles. Kalanick's parents are Bonnie Renée Horowitz Kalanick (née Bloom) and Donald Edward Kalanick. Bonnie, whose family were Viennese Jews who immigrated to the U.S. in the early 20th century, worked in retail advertising for the Los Angeles Daily News. Donald, from a Slovak–Austrian Catholic family whose grandparents immigrated to the United States from the Austrian city of Graz, was a civil engineer for the city of Los Angeles. Kalanick has two half-sisters, one of whom is the mother of actress Allisyn Ashley Arm, and a brother who is a firefighter.

In middle and high school, Kalanick was known to be competitive and driven to win. As a teenager, Kalanick sold knives door-to-door for direct sales company Cutco. At 18, he started a test preparation company called "New Way Academy" with the father of a classmate. After graduating from Granada Hills Charter High School, Kalanick studied computer engineering and business economics at the University of California, Los Angeles (UCLA). While studying at UCLA, Kalanick was a member of Theta Xi fraternity. In 1998, he dropped out to work at the start-up Scour full-time.

In 1998, Kalanick, along with Michael Todd and Vince Busam, dropped out of UCLA to work for Dan Rodrigues, founder of Scour Inc., a multimedia search engine, and Scour Exchange, a peer-to-peer file sharing service. Kalanick handled sales and marketing for Scour. He has referred to himself as a co-founder of the company, but the other co-founders have disputed this.

After months of growth, Scour needed cash and sought funding from venture capitalist investors Ronald Burkle and Michael Ovitz. Negotiations were contentious and Ovitz eventually sued Scour for breach of contract. Scour was forced to accept unfavorable terms for the investment, and Ovitz acquired majority control over the company. The situation soured Kalanick's view of investor-founder relations.