Wealthiest Families in the World

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The richest family in the world is the Walton family, heirs of Walmart founder Sam Walton. Their lead comes from one source: the family’s large stake in a company that opened in Arkansas in 1962 and grew into the world’s largest company by revenue, with $681 billion in fiscal 2025 revenue and more than 2.1 million associates. The Waltons were briefly overtaken by the Al Nahyan family of Abu Dhabi in 2023 before returning to first place.

A ranking of family fortunes differs from a list of the world’s richest people. It adds together the holdings of siblings, cousins and descendants who share one source of wealth. That makes it a different measurement, and some entries rest on far weaker evidence than others.

What the order is based on

Each family’s place comes from an estimated combined net worth: the value of what family members own, minus what they owe. For a business family, most of that value is the family’s ownership stake in its company, multiplied by what that stake is worth. For a ruling family, the estimate also has to account for oil reserves, sovereign wealth fund holdings and other state assets that are hard to separate from the family itself.

The figures move with markets. When most of a family’s wealth sits in a publicly traded company, its estimate rises and falls with the share price. Walmart, Hermès, L’Oréal and Reliance Industries are all listed companies, so their founding families’ positions can shift with stock market moves alone. Families close together in the ranking can swap places from one estimate to the next without either family buying or selling anything.

Private companies are valued by estimate, not by price. Mars Incorporated, Koch Industries and Chanel are privately held. No daily market price exists for them, so their value has to be inferred from revenue, profits and what comparable companies are worth. A private company’s estimate can be reasonable and still be less exact than a figure built from a listed share price.

Why royal fortunes are the least certain entries

The Gulf ruling families sit in a separate category of uncertainty. Their fortunes draw on oil and gas reserves, payments from the state and investment funds, and there is no clean line between what belongs to the family and what belongs to the country. Estimates for the House of Saud differ by tens of billions of dollars between sources, partly because the family may include as many as 15,000 extended members, many of whom have founded businesses or received government contracts.

This is also why Sheikh Mohamed bin Zayed Al Nahyan does not appear on individual billionaire lists even though his personal wealth is likely in the billions. His family’s wealth comes largely through oil reserves, sovereign wealth funds and state assets, which do not meet the personal-ownership and transparency standards those lists require.

Two kinds of fortune on one list

The ten families split into two groups, and the split matters more than the exact order for understanding where the money comes from.

Business dynasties

Seven of the families built their wealth by founding or backing a company and holding onto it across generations.

• Walton (Walmart): A single retail business with more than 10,800 stores worldwide, known for low prices in big-box stores across rural and suburban America.
• Hermès: The French luxury house began in the 19th century when Thierry Hermès made riding gear for the aristocracy. Its scarves, ties, perfumes and Kelly and Birkin handbags carry the brand today. Axel Dumas serves as executive chairman and Pierre-Alexis Dumas as artistic executive vice president.
• Koch (Koch Industries): Charles Koch’s fortune grew from an oil business founded by his father. He ran it with his brother David until David’s death in 2019, and he is widely known for funding candidates, libertarian think tanks and university professorships.
• Mars (Mars Incorporated): Founded by Frank Mars, the company is now better known for M&M’s than for the Mars bar. It moved into pet care with the $9.1 billion purchase of VCA in 2017.
• Bettencourt Meyers (L’Oréal): L’Oréal was founded in 1909 by chemist Eugène Schueller. His granddaughter Françoise Bettencourt Meyers, the world’s wealthiest woman, sits on L’Oréal’s board and chairs the family holding company, Téthys Invest. The company has expanded through acquisitions including Aesop, Color Wow and House of Creed.
• Ambani (Reliance Industries): The Indian conglomerate, founded in 1957 by the brothers’ late father, is the only Asian company among the ten. Mukesh Ambani oversees refining, petrochemicals, oil, gas and textiles, while his brother Anil has run telecommunications, asset management, entertainment and power generation.
• Wertheimer (Chanel): Brothers Alain and Gerhard Wertheimer co-own the fashion house that their grandfather financed with founder Gabrielle “Coco” Chanel. Chanel is known for the little black dress, Chanel No. 5 and the late designer Karl Lagerfeld.

Ruling families

The other three families are monarchies whose fortunes are bound up with national energy wealth.

• Al Nahyan (Abu Dhabi): Sheikh Zayed bin Sultan Al Nahyan led the UAE from its founding in 1971 until 2004. His son Sheikh Khalifa followed from 2004 to 2022, and another son, Sheikh Mohamed bin Zayed, became ruler of Abu Dhabi and president of the UAE in 2022. Abu Dhabi is one of the richest emirates because of its oil.
• Al Saud (Saudi Arabia): The House of Saud has ruled for nearly a century. Its wealth has grown through decades of payments from the Royal Diwan, the king’s executive office, and through ties to Saudi Aramco, one of the world’s most profitable companies.
• Al Thani (Qatar): The family has ruled Qatar since the mid-19th century. Sheikh Hamad bin Khalifa Al Thani took full control in a bloodless coup against his father in 1995, freezing his father’s assets to prevent a counter-coup. During his 18 years in power, offshore gas fields and new oil discoveries drove a surge in production, and he invested billions in companies including Volkswagen, Total, Sainsbury’s and Barclays. He later handed power to his son, Sheikh Tamim bin Hamad Al Thani.

Family totals versus individual heirs

A family figure is a sum, and the individuals behind it often appear separately on billionaire lists. Rob, Jim and Alice Walton each rank among the richest people in the world in their own right. Charles Koch appears individually, and so do Julia Koch, David’s widow, and her family. Siblings Jacqueline and John Mars, grandchildren of Frank Mars, hold equal fortunes. The Wertheimer brothers do as well.

This explains a common question: how can a family outrank the richest individual while none of its members do? The family figure combines several large fortunes that share a source. An individual list ranks each person separately. A family with three heirs who are each among the world’s twenty richest people can have a combined total well above any single heir.

How to compare the families

The ranking shows how large each fortune is. Several other features make the families easier to tell apart than their positions alone.

Concentration. The Walton, Hermès, Bettencourt Meyers, Mars and Wertheimer fortunes each come mainly from one company and one industry. Reliance is a conglomerate spanning energy, materials and consumer businesses. The Gulf royals’ wealth is spread across energy reserves, investment funds and holdings in foreign companies. A concentrated fortune moves with one company’s results; a diversified one does not depend on a single business.

Public or private. A family holding listed shares is exposed to daily price changes, which shows up in its estimate. A privately held business such as Mars or Koch Industries avoids that daily repricing, and the family keeps full control of decisions without public shareholders. Our ranking of the largest companies by market cap shows how listed companies themselves are valued.

Generation and control. Mars is now run partly by the fourth generation of the family. At L’Oréal, Jean-Victor Meyers succeeded his mother as vice chairman of the board in 2025. Hermès is led by members of the founding family’s descendants. Long family control is what keeps these fortunes counted as a single family’s wealth rather than splitting into many smaller ones.

Source of wealth. Luxury goods account for three of the business families (Hermès, Bettencourt Meyers and Wertheimer, all French). Energy runs through four entries: the three Gulf monarchies and the Koch family’s origins. Retail, candy and pet care, and a diversified Indian conglomerate fill out the rest.

Famous families outside the top ten

Several well-known dynasties do not appear among the ten, usually because their wealth is spread out or hard to value.

The British royal family. The Windsors have accumulated property, jewels and art over centuries, but the size of the family’s wealth is uncertain. The holdings are vast and varied, many have historical value that markets do not price, and the family has a tradition of keeping financial details private.

The Rockefellers. John D. Rockefeller built his fortune through Standard Oil, which the U.S. Supreme Court ordered broken up in 1911. His descendants’ wealth has been divided across generations and is not tied to a single family-controlled company of the kind that anchors the listed fortunes.

The Rothschilds. The Rothschild banking dynasty spread across several European financial centers in the 19th century. Like the Rockefellers, the family’s wealth today is held across many branches and descendants rather than consolidated in one company, which keeps it off rankings built around a shared business stake.

The richest family on paper is not always the most powerful. The Gulf ruling families combine wealth with political authority over their countries, while the Koch family’s influence comes largely through political funding rather than holding office.

FAQs

The Bottom Line

Readers comparing the world's wealthiest families should read the ranking as a set of estimates with uneven precision. Families built on listed shares such as Walmart, Hermès, L'Oréal and Reliance can trade places on stock moves alone, private firms like Mars, Koch Industries and Chanel are valued by inference, and Gulf ruling houses remain the least certain because family and state wealth overlap. The source and structure of each fortune explain more than its exact position.