FORTUNE's annual ranking of America's leading businesswomen

25 of 50
25. Jan Fields
Jan Fields
McDonald's USA
2011 rank: 17
Age: 57
The recent promotion of a new No. 1 and No. 2 at McDonald's probably means Fields, head of the U.S. division since 2010 and a 34-year company veteran, has peaked at the Golden Arches. In a weak consumer environment McDonald's stock returned 9% this year, vs. 25% for the S&P.
From the October 8, 2012 issue
How we pick the Power 50
The list is compiled by FORTUNE editors, who consider four criteria: the size and importance of the woman's business in the global economy, the health and direction of the business, the arc of the woman's career (resume and runway ahead), and societal and cultural influence.