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Billionaire Profile
John Mars
Global Rank
#37

Image: Frank Earle Schoonover | Public domain | via Wikimedia Commons

John Mars

CEO, Candy
Jackson, Wyoming
Real-Time Net Worth
$50.3B
Estimated based on Candy stock value as of September 10, 2026
0% (24h)
Age
90
Source
Candy, pet food
Industry
Food & Beverage
Citizenship
United States

Biography

John Franklyn Mars, born in 1935, is an American businessman and heir to the Mars, Incorporated fortune. As chairman of the privately held Mars, Inc., he has overseen the growth of the global confectionery, pet care, and food company founded by his grandfather. With an estimated net worth of $49.1 billion, John Mars is a prominent figure in the food and beverage industry. His career highlights include becoming Chairman of Mars, Inc., acquiring VCA, Inc., and growing Mars into a global company. John Mars's wealth stems from his inheritance and strategic leadership within the family business.

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Data Updated
Sep 10, 2026
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Wealth Over Time

Net Worth History

YearNet Worth
2026$50.3B
2025$49.1B
2024$49.1B
2023$46.4B

Portfolio Holdings

Mars, Incorporated

Mars, Incorporated

Food Beverage
Ownership
33.3%
Revenue
$50.0B
McLean, Virginia, U.S.
140,000+ employees
Founded 1911

In-Depth Profile

Early Life

John Franklyn Mars was born on October 15, 1935, to Forrest Mars Sr. and Audrey Ruth (Meyer). He is the grandson of Frank C. Mars, the founder of Mars, Incorporated. John attended the Hotchkiss School and graduated from Yale University.

Rise to Success

John Mars inherited a stake in Mars, Inc. when his father died in 1999. He is the chairman of the company, and, along with his sister Jacqueline, each own an estimated one-third of the company. Mars, Incorporated, under his leadership, has grown into a global powerhouse, generating approximately $55 billion in annual revenue.

Key Business Strategies

John Mars has been instrumental in the company's growth, including the acquisition of VCA, Inc. for $7.7 billion in 2017. More recently, in December 2025, Mars acquired Kellanova for $35.9 billion. Mars, Inc. is known for its private ownership, which allows for a long-term strategic vision without the pressures of public markets.

Philanthropy

John Mars and his wife, Adrienne, are known supporters of the Smithsonian Institution. Additionally, Mars donated $2 million to Yale University with his brother in 1999.

Career Milestones

1958

Joined Mars, Incorporated

Began his career in the family business after serving in the US Army.

1969

Assumed Management Responsibilities

Began managing the business along with his brother Forrest Mars Jr. after their father's retirement.

1999

Inherited Stake in Mars, Inc.

Became co-owner after the death of his father.

2015

Awarded Honorary Knighthood

Received an honorary knighthood from Queen Elizabeth II.

2017

Acquired VCA, Inc.

Led Mars's acquisition of VCA, Inc., a pet care company, for $7.7 billion.

Philanthropy & Social Impact

Cultural

Smithsonian Institution Support

Undisclosed

John Mars and his wife are noted supporters of the Smithsonian Institution in Washington, D.C..

Education

Yale University Donation

$2M

Donated $2 million to Yale University with his brother in 1999.

Billionaires Connected to John Mars

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Richest in United States

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Adjacent Global Ranks

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Frequently Asked Questions

What is John Mars's net worth in 2026?
As of 2026, John Mars's estimated net worth is $50.348 billion, ranking #37 among the world's billionaires. The estimate is based on publicly available shareholding data and market prices, updated daily.
How did John Mars make their money?
John Mars's wealth primarily comes from Candy, pet food, most notably through Candy.
Where is John Mars from?
John Mars is from United States.
How old is John Mars?
John Mars is 90 years old.

Sources & References

  1. John Mars — Forbes profile — Forbes