Iris Fontbona (Chile) $11 billion

        

 

Widowed, 3 children

Inherited fortune after her husband Andronico Luksic died in 2005. She is matriarch of the family that controls Antofagasta, one of the world's largest copper mines; It has shares in Quinenco, a consumer packaging and beverage maker, and Plava Laguna, a chain of Croatian beach resorts. Son Jean Paul is Antofagasta's chairman.