This is a difficult question to answer, as there are many factors to consider when determining who is the youngest successful entrepreneur. Some factors include the age at which the entrepreneur started their business, the size and success of the business, and the definition of success.
However, if we take a look at some of the most successful entrepreneurs in the world, we can see that many of them started their businesses at a young age. For example, Mark Zuckerberg, the co-founder of Facebook, started the company when he was just 19 years old. Similarly, Evan Spiegel, the co-founder of Snapchat, started the company when he was only 22 years old.
So while there is no definitive answer to this question, it is clear that many young people have been able to find success as entrepreneurs.