17. Chua Sock Koong
2005 rank: 50
Last year Chua, 48, made the list as CFO of Southeast Asia's biggest telecom (2005 revenues: $8.3 billion). In September she got a new title: boss. And new things to worry about, like the $5 billion write-down SingTel may have to take on the Australian telco it acquired for an inflated price in 2001.
Call it the year of the Most Powerful Woman CEO. In fact the top seven positions on the 2006 list are held by chief executives.) (more)
Which corporate women raked it in - and how much did they earn? (more)