Marissa Mayer became Yahoo's president and CEO on July 17, 2012.
Virginia Rometty was elected CEO of IBM in October 2011. She took the helm of the technology company on Jan. 1, 2012.
Meg Whitman is famously known as the woman who took eBay from 30 to 15,000 employees. She was chosen as Hewlett Packard's CEO in September 2011.
Credit: Getty/Kevork Djansezian
Indra Nooyi joined PepsiCo in 1994 and rose to become the company's CEO in October 2006.
Andrea Jung was appointed Avon Products' CEO in November 1999. She's also on the board of directors at Apple.
Carol Meyrowitz joined the retailer TJX Companies in 1983 and became CEO in January 2007.
Credit: TJX Companies
Ellen Kullman joined DuPont in 1988 and rose to become the company's CEO in January 2009.
Ursula Burns joined Xerox in 1980. After working her way through various roles at the company, she went on to be named CEO in May 2010.
Irene Rosenfeld was appointed CEO of Kraft Foods in June 2006.
Angela Braily joined U.S.-based health care company WellPoint in 1999. She went on to be elected as the company's CEO in June 2007.
Patricia Woertz became the CEO of food production company Archer Daniels Midland in April 2006.
Credit: Archer Daniels Midland
Laura Sen was named CEO of BJ's Wholesale Club in February 2009.
Credit: BJ's Wholesale Club
Lynn Elsenhans was named Sunoco's CEO in August 2008.
Beth Mooney was elected the CEO of KeyCorp in May 2011.
Debra Reed became the CEO of Sempra Energy in June 2011.
Credit: Sempra Energy
Denise Morrison became CEO of Campbell Soup Company in August 2011.
Gracia C. Martore became the CEO of publishing company Gannett in February 2010.
Credit: Gannett Co.
Heather Bresch will become Mylan Pharmaceuticals' CEO on Jan. 1, 2012.
Deanna Mulligan was named CEO of Guardian Life Insurance Company of America in July 2011.
Credit: Guardian Life Insurance Company of America