Who is the bilionaure in the world?

As of my last knowledge update in October 2023, the title of the world's richest billionaire often fluctuates among a few individuals, including Elon Musk, Bernard Arnault, and Jeff Bezos. Their net worth can change rapidly due to Stock Market variations and business developments. For the most current information, it's best to consult a reliable financial news source or the Forbes Billionaires List.