The Walton Family: Retail Dominance In 1962, he founded Walmart, which quickly grew into a retail behemoth, becoming the world's largest company by revenue. Sam Walton's legacy lives on through his descendants, who collectively own about half of Walmart's shares, making them the wealthiest family in the world.

As of March 2026, the House of Saud, the royal family of Saudi Arabia, is widely considered the richest family in the world. Their combined wealth is estimated to exceed $1.4 trillion, though the exact figure is obscured by the integration of family assets with the state’s energy infrastructure. This fortune is driven by their control over Saudi Aramco, the world’s largest oil company, and the Public Investment Fund (PIF), which in 2026 holds massive stakes in global sports, technology, and real estate. While individuals like Elon Musk or Jeff Bezos often top "richest person" lists with $200B–$800B, the collective wealth of the 15,000 members of the House of Saud dwarfs any single billionaire. Other contenders for the "wealthiest family" title include the Al Nahyan family of Abu Dhabi (estimated at $300B+) and the Walton family (owners of Walmart, estimated at $270B+). However, in terms of sheer geopolitical and financial "ownership" of global assets, the Saudi royals remain the undisputed leaders in the 2026 global economy.