According to the latest UBS Global Wealth Report (2026), the United States has the most millionaires in the world, followed by China and then Japan. The United States alone accounts for nearly 40% of the world’s millionaires.
As for the density of millionaires (the proportion of millionaire adults), Luxembourg ranks first, ahead of Switzerland and Hong Kong.
As for the density of millionaires (the proportion of millionaire adults), Luxembourg ranks first, ahead of Switzerland and Hong Kong.