Melani Lowman
Can you think of a one stop shop more famous than Wal-Mart? Yes, Melani is married to Rob Walton, or more formally Samuel Robson Walton, the chairman of the store. He’s the oldest son of Sam Walton, who founded the company, which is the world’s largest retailer.

Melani Lowman
In February 2018, his net worth was estimated to be $43.4 billion. Melani Lowman married him in 2005, and she’s his third wife. So that means Melani’s husband has officially become the 16th richest person on Earth.
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Oleksandra Nikolayenko
Another casino mogul’s wife has made our list. Oleksandra is a Ukrainian model/actress who married Phil Ruffin. Ruffin, Ukrainian casino mogul, is worth an incredible $2.7 billion as of Forbes in 2018.

Oleksandra Nikolayenko
Both husband and wife devote much of their time to charitable causes. Also, Oleksandra serves as the National Director Chairman for the Miss Ukraine Universe. In addition, she designed a spa and salon at one of Ruffin’s casinos.