Who was the youngest billionaire on Forbes’ 2016 World’s Billionaires list?

Alexandra Andresen was the youngest billionaire on Forbes’ 2016 World’s Billionaires list.

Norwegian heiress Alexandra Andresen was 19 when Forbes included her in the 2016 global ranking. Her estimated fortune came from ownership connected to Ferd, the Norwegian investment company controlled by her family. Her older sister, Katharina Andresen, was also listed among the world’s youngest billionaires.

The sisters’ fortunes were associated with shares transferred to them by their father, Johan H. Andresen Jr. This is why Forbes classified them as heirs rather than self-made entrepreneurs. The ranking therefore illustrates the difference between age and the source of wealth.

Alexandra Andresen remained one of Forbes’ youngest billionaires in subsequent years. A frequent confusion is mixing her with Mark Zuckerberg or Evan Spiegel, who became billionaires through technology companies they helped create. Forbes’ annual lists identify the youngest person included at that year’s valuation date, so the answer can change between editions.