Meet The World's Youngest Billionaires 2025

The world's youngest billionaires, spanning self-made and inherited wealth, have made their mark before turning 25. Spanning industries from pharmaceuticals to gaming, they represent the next generation of global wealth transfer and are collectively worth more than $22.7 billion. Ages, net worths and rankings are as of December 11, 2025.

- AMAL ABDELWAHAB

1. Johannes von Baumbach

Age: 20

Net Worth: $5.7 Billion

Source of Wealth: Pharma

Citizenship: Germany

von Baumbach, the world's youngest billionaire, is an heir to Germany's Boehringer Ingelheim, the largest privately owned pharmaceutical company. Founded in 1885 by Albert Boehringer, the family-run firm remains a global leader in human and animal health, employing over 54,500 people across 130 markets. Ranked 650th on Forbes’ 2025 World’s Billionaires List, von Baumbach and his three siblings, all under 30, each hold a $5.7 billion stake in the company. Boehringer Ingelheim’s group net sales grew by 6.3% to $16.4 billion in H1 2025.

2. Lívia Voigt de Assis

Age: 21

Net Worth: $1.2 Billion

Source of Wealth: Industrial Machinery

Citizenship: Brazil