Japan is home to some of Asia’s most successful entrepreneurs, with fortunes built across technology, fashion, retail, manufacturing, food and beverages, and real estate. In 2026, Masayoshi Son, founder and chairman of SoftBank Group, has reclaimed the title of Japan’s richest person, according to Forbes.
Masayoshi Son: Japan’s Richest Person
Masayoshi Son has returned to the top of Japan’s wealth rankings after a four-year gap. Forbes estimated his fortune at approximately $80 billion in its 2026 Japan’s 50 Richest ranking, making him one of the world’s wealthiest technology investors.
Son built his fortune through SoftBank Group, the Japanese investment and technology conglomerate he founded. His wealth has been strongly influenced by SoftBank’s investments in technology and artificial intelligence, including its multibillion-dollar investment in OpenAI.
According to Forbes, Son’s fortune increased by about $51.8 billion, or 184%, compared with the previous year. SoftBank also reported record annual net profit of approximately ¥5 trillion for the financial year ending March 31, 2026.
From Entrepreneur to Global Investor
Son’s rise began decades ago when he started building businesses around technology and telecommunications. SoftBank eventually expanded beyond Japan, becoming a major global investor in technology companies.
His investment strategy has made him particularly influential in the technology and artificial intelligence sectors. Rather than relying on a single company or industry, Son has positioned SoftBank as a global investment platform focused heavily on emerging technologies.
Tadashi Yanai Ranks Second
The No. 2 position belongs to Tadashi Yanai, the founder and driving force behind Fast Retailing, the parent company of Uniqlo.
Forbes valued Yanai and his family’s fortune at approximately $65 billion in its 2026 annual Japan ranking. Despite falling behind Son, Yanai remains Japan’s second-richest person and one of the most successful retail entrepreneurs in the world.
Uniqlo has become a global clothing brand, with nearly 2,500 stores across 25 countries. Fast Retailing also owns brands including GU, Theory and Helmut Lang.
Japan’s Top 10 Richest in 2026
Forbes’ 2026 ranking places the following among Japan’s wealthiest individuals and families:
Masayoshi Son — $80 billion
Tadashi Yanai — $65 billion
Takemitsu Takizaki — $23.6 billion
Nobutada Saji — $9.3 billion
Sekiya family — $9.1 billion
Yasumitsu Shigeta — $6 billion
Takao Yasuda — $4.7 billion
Hideyuki Busujima — $4.6 billion
Toichi Takenaka — $4 billion
Akira Mori — $3.95 billion
Technology and AI Reshape Japan’s Wealth
One of the biggest themes behind Japan’s 2026 billionaire rankings is the growing influence of technology and artificial intelligence.
Japan’s richest individuals have traditionally built their fortunes through manufacturing, retail, food and beverages, and property. However, the rapid growth of AI-related investments has created new opportunities for technology-focused investors.
The strong performance of Japanese equities also helped increase billionaire fortunes. Forbes reported that the combined wealth of Japan’s 50 richest people increased by 29% to $294 billion in 2026.
A New Era for Japan’s Billionaires
Masayoshi Son’s return to the top highlights how quickly Japan’s wealth rankings can change when technology and financial markets move sharply.
His success demonstrates the enormous potential of long-term investments in emerging technologies, while Tadashi Yanai’s fortune illustrates the continuing strength of Japanese consumer brands on the global stage.
As artificial intelligence, technology and international investment continue to reshape the global economy, Japan’s billionaire landscape is likely to remain closely connected to the country’s ability to compete in the next generation of industries.
Final Thoughts
Masayoshi Son is Japan’s richest person in Forbes’ 2026 annual ranking, with an estimated fortune of $80 billion. His comeback to the No. 1 position reflects the extraordinary rise in SoftBank’s value and the growing importance of AI investments.
With Tadashi Yanai, Takemitsu Takizaki and other billionaires following closely behind, Japan remains home to some of Asia’s most powerful business leaders and entrepreneurs.
