Man, it would be great to be a billionaire. It would be even better to be a billionaire before the age of 35. That's what these lucky people are – billionaires and still pretty young. Of course, tech gurus like Evan Spiegel and Bobby Murphy aside, many of these young billionaires have inherited their fortunes. Either way, their wealth allows them to do some pretty spectacular things, like buy an island and then a private jet to get to that island.

As of August 2019, the youngest billionaire in the world is 23-year-old Alexandra Andresen. Alexandra and her 24-year-old sister Katharina, who inherited their fortunes, each have a net worth of $1.4 billion. In 2007, their father, Johan Andresen, transferred his shares of Ferd Holdings, Norway's biggest company, to his daughters. The Andresen family made a massive fortune in the tobacco industry. Alexandra and Katharina's great, great, great grandfather founded Norway's biggest cigarette company. That company was sold for $500 million in 2005 and the money was invested in hedge funds and real estate. Needless to say, those investments did very, very well.

Many of these young billionaires are self made and almost all of them are men. There are currently 2,153 billionaires and only 71 of them are younger than 40.

Tommaso Boddi/Getty Images

Here are the 19 youngest billionaires and their net worth, listed by age.

Alexandra Andresen – 23

Net Worth: $1.2 billion

Source: inheritance

Katharina Andresen – 24

Net Worth: $1.2 billion

Source inheritence

Gustav Magnar Witzoe – 28

Net Worth: $3 billion

Source: salmon farming, inheritance

Evan Spiegel – 29

Net Worth: $2.5 billion

Source: Snap

John Collison – 28

Net Worth: $2.1 billion

Source: Stripe

Ludwig Theodor Braun – 29

Net Worth: $1 billion

Source: medical devices

Anna Kasprzak – 29

Net Worth: $1 billion

Source: Ecco shoes

Jonathan Kwok – 30

Net Worth: $2.3 billion

Source: Property development

Patrick Collison – 30

Net Worth: $2.1 billion

Source: Stripe

Bobby Murphy – 31

Net Worth: $2.3 billion

Source: Snap

Said Gutseriev – 31

Net Worth: $1.3 billion

Source: inheritance

Lukas Walton – 32

Net Worth: $12 billion

Source: Walmart

Eva Maria Braun-Luedicke – 32

Net Worth: $1.2 billion

Source: medical devices

André Kasprzak – 32

Net Worth: $1 billion

Source: Ecco shoes

Christopher Kwok – 33

Net Worth: $1.8 billion

Source: Property development

Jihan Wu – 33

Net Worth: $1.5 billion

Source: crypto currency

Julio Mario Santo Domingo, III – 34

Net Worth: $2.3 billion

Source: Anheuser-Busch InBev, inheritance

Geoffrey Kwok – 34

Net Worth: $2.9 billion

Source: Property development, inheritance

Aiyawatt Srivaddhanaprabha – 34

Net Worth: $1 billion

Source: duty free retail, inheritance

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