10.Abigail Johnson  Net worth: $21.2 billion Source of wealth: money management

9.Iris Fontbona  Net worth: $22.8 billion Source of wealth: Mining

8.Susanne Klatten  Net worth: $24.3 billion Source of wealth: BMW, pharmaceuticals

7.Miriam Adelson  Net worth: $27.5 billion Source of wealth: Casinos

6.Gina Rinehart  Net worth: $30.2 billion Source of wealth: Mining

5.Jacqueline Mars  Net worth: $31.7 billion Source of wealth: Candy, pet food

4.MacKenzie Scott  Net worth: $43.6 billion Source of wealth: Amazon

3.Julia Koch  Net worth: $60 billion Source of wealth: Koch Industries

2.Alice Walton  Net worth: $65.3 billion Source of wealth: Walmart

1.Francoise Bettencourt Meyers Net worth: $74.8 billion Source of wealth: L'Oréal