A centi-billionaire (also called a hectobillionaire) is someone with a net worth of $100 billion or more. As of 2026, only a handful of individuals worldwide have crossed this threshold, including Elon Musk, Jeff Bezos, and Bernard Arnault at various points.
The term gained prominence as extreme wealth concentration increased through the 2010s and 2020s. The rise of trillion-dollar tech companies created a new tier of wealth that made the traditional "billionaire" label feel insufficient. A centi-billionaire's daily fluctuation in net worth can exceed the lifetime earnings of thousands of average workers.