Susan Diane Wojcicki, born July 5, 1968, is an American technology executive. She has been the CEO of YouTube since February 2014.

Wojcicki was involved in the founding of Google and became Google's first marketing manager in 1999. She was in charge of Google's original video service and, after observing the success of YouTube, proposed the acquisition of YouTube by Google in 2006.

Wojcicki has an estimated net worth of nearly $500 million.

In September 1998, the same month that Google was incorporated, its founders Larry Page and Sergey Brin set up an office in Wojcicki's garage in Menlo Park. Before becoming Google's first marketing manager in 1999, Wojcicki worked in marketing at Intel Corporation in Santa Clara, California, and was a management consultant at Bain & Company and R.B. Webber & Company.

At Google, she worked on the initial viral marketing programs and the first Google Doodles. Wojcicki also developed successful contributions to Google, such as Google Images and Google Books.

Wojcicki grew within Google to become senior vice president of Advertising & Commerce and led the advertising and analytic products, including AdWords, AdSense, DoubleClick, and Google Analytics.

Then, a tiny start-up, YouTube, successfully competed with Google's Google Video service, overseen by Wojcicki. Her response was to propose the purchase of YouTube.

She handled two of Google's largest acquisitions, the $1.65 billion purchase of YouTube in 2006 and the $3.1 billion purchase of DoubleClick in 2007.