Marijke Elizabeth Mars[2] (born 1965) is an American billionaire heiress and businesswoman.
[3] In March 2018 Forbes estimated her wealth to be $5.9 billion.
She was ranked as the 30th-richest woman in the world, a position shared with her three sisters.
She has three sisters: Pamela Mars-Wright, Valerie Mars and Victoria B.
[6] She inherited about an 8 percent stake on Mars Inc. in 2016, which made her a billionaire.