Grace D. Lieblein
Grace D. Lieblein
President and managing director
GM Brazil
2011 Global Rank: 22
Country: Brazil

Some three decades after starting as a co-op student at GM's assembly division in Los Angeles, Lieblein, 51, is now the automaker's highest-ranking executive in Latin America. After profitably running GM's Mexico operations -- she was the first woman to do so -- she took the wheel in Brazil, one of GM's largest global markets, in June.

Last updated September 29 2011: 6:52 AM ET