John Mars
$43B
as of 07/12/26
About John Mars
John Mars and his siblings Jacqueline and Forrest Jr. (d. 2016) inherited stakes in the candy firm Mars when their father died in 1999.
He and Jacqueline each own an estimated one-third of the company. His late brother Forrest Jr.'s four daughters are believed to own the rest.
The $65 billion (sales) business was founded by John's grandfather, Frank, in 1911.
Mars acquired snack company Kellavova in December 2025 for $35.9 billion including debt.
Personal stats
Citizenship
United States of AmericaSource of wealth
Candy, pet foodResidence
Jackson, WyomingMarital status
MarriedBirth date
10/15/35 (age 90)Number of children
3Education
Diploma, The Hotchkiss School; Bachelor of Arts/Science, Yale UniversitySelf-made
inheritedJohn Mars’s fortune is worth
717K
troy ounces of gold
662K
median U.S. household
430K
median U.S. income
0.86%
U.S. credit card volume
0.172%
GDP of the United States
0.126%
United States debt
Net worth history
Annual ranking
Did you know?
The company's first big hit was the Milky Way candy bar, introduced in 1923.
Net worth over time
Real-time ranking
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