1. Angela Merkel, Chancellor of Germany
2. Hillary Clinton, US Secretary of State
3. Dilma Rousseff, President of Brazil.
Dilma Vana Rousseffis is the 36th and current President of Brazil. She is the first woman to hold the office. Prior to that, in 2005, she was also the first woman to become Chief of Staff to the President of Brazil, appointed by then President Luiz Inácio Lula da Silva
4. Melinda Gates, Co-chair, Bill & Melinda Gates Foundation
5. Jill Abramson, Executive Editor, The New York Times
6. Sonia Gandhi, President, Indian National Congress Party
7. Michelle Obama, US First Lady
8. Christine Lagarde, Head of International Monetary Fund
9. Janet Napolitano, US Secretary of Homeland Security
10. Sheryl Sandberg, COO, Facebook