Marissa Ann Mayer ( born May 30, 1975) is President and CEO of Yahoo!. Previously, she was a long-time executive and key spokesperson for Google. Mayer was ranked number 14 on the list of America's most powerful businesswomen of 2012 by Fortunemagazine.

Mayer was born in Wausau, Wisconsin, the daughter of Margaret Mayer, an art teacher of Finnish descent, English title: "Google vice president visits the land of her ancestors". and Michael Mayer, an environmental engineer who worked for water companies. After her 1993 graduation from Wausau West High School, Mayer was selected by Tommy Thompson, then the Governor of Wisconsin, as one of the state's two delegates to attend the National Youth Science Camp in West Virginia.
Mayer graduated with honors from Stanford University with a B.S. in symbolic systems and an M.S. in computer science. For both degrees, her specialization was in artificial intelligence. In 2009, the Illinois Institute of Technology granted Mayer an honoris causa doctorate degree in recognition of her work in the field of search.