The Global Power 50

With 11 newcomers - several of them American expats gone to Europe - our list of the most powerful women in global business demonstrates their rise in male-dominated fields, from nuclear energy to mining to oil.

15 of 50

15. Chua Sock Koong

CEO
Singapore Telecommunications

Country: Singapore
2006 rank: 17

There seems no limit to Chua's ambitions. As CFO, the 49-year-old helped SingTel embark on a $20 billion Asian expansion. Now, after a year as CEO, she has begun adding her own conquests. The latest target: Pakistan, where Chua acquired 30% of Warid Telecom for $760 million. Although the share price struggles, first-quarter revenues were up more than 10% over last year, to $2.4 billion.

Cynthia Carroll Anne Lauvergeon Marjorie Scardino Patricia Russo Linda Cook Anne-Marie Idrac Marina Berlusconi Güler Sabanci Ana Patricia Botín Nancy McKinstry Annika Falkengren Ho Ching Maureen Chiquet Maria Ramos Chua Sock Koong Vivienne Cox Clara Furse Angela Ahrendts Barbara Kux Gulzhan Moldazhanova Val Gooding Patricia Barbizet Deb Henretta Cheung Yan Yang Mianmian María Aramburuzabala de Garza Sun Yafang Gail Kelly Lubna Olayan Barbara Stymiest Ingrid Matthäus-Maier Kate Swann Chanda Kochhar Ilene Gordon Galia Maor Pansy Ho Françoise Gri Naina Lal Kidwai Yoshiko Shinohara Barbara Dalibard Teresita Sy-Coson Dominique Hériard Dubreuil Imre Barmanbek Dominique Reiniche Sawako Noma Ofra Strauss Clara Gaymard Dong Mingzhu Li Xiaolin Kiran Mazumdar-Shaw

50 MOST POWERFUL WOMEN 2007

50 Most Powerful Women

Women have come a long way (don't say 'baby') - and they're not slowing down. The credentials of the women on Fortune's list this year are the strongest yet. (more)

25 Highest-paid women

Which corporate women raked it in last year - and how much did they earn? (more)

25 Best-paid men

See how male executives' paychecks compare. (more)