They say money doesn't grow on trees, but for these young individuals, they'd probably have enough money to buy one or two-if that kind of tree was real, of course. The following is a list of the youngest billionaires and they come from all over the world:

1. Mark Zuckerberg

Age: 28

Responsible for launching Facebook from his college dorm room and grew it into one of the world's most successful businesses. According to public estimates, he is worth close to $15 billion.

2. Dustin Moskovitz

Age: 28

Knew Zuckerberg from college and worked on Facebook in its early stages. Since then, he left Facebook to pursue a new start-up along with charitable work. According to Forbes, his net worth is estimated to be around $3.5 billion.

3. Albert Von Thurn Und Taxis

Age: 28

He is a German prince who attended school in Italy and Scotland, before returning to his home country. He enjoys race-car driving as well as local energy projects. His net worth is $1.5 billion.

4. Scott Duncan

Age: 29

Duncan inherited billions from his late father who started an energy pipeline company. He is worth $4.1 billion.

5. Sean Parker

Age: 32

The co-founder of Napster (and first president of Facebook) has about $2.1 billion to his name. He was Zuckerberg's mentor; and he also was an early investor in Spotify, the music sharing company.

6. Eduardo Saverin

Age: 30

The co-founder of Facebook, now worth an estimated $2 billion. Responsible for suing Facebook and later agreed to a settlement.

7. Yang Huiyan

Age: 30

She is the only woman on the list and she gained her billions when her father transferred much of his own wealth to her in 2005. Her father started Country Garden, a successful Chinese high-end real estate company. Her net worth is $4.7 billion.

8. Fahd Hariri

Age: 31

He currently lives in Paris and is the youngest son of the late Lebanese Prime Minister Rafic Hariri and holds an architecture degree. He is worth $1.3 billion.

9. Ayman Hariri

Age: 33

He is the second-youngest son of slain Lebanese Prime Minister Rafik Hariri, who left behind a fortune now shared by his five children. His net worth is $1.3 billion.

10. Robert Pera

Age: 34

Pera was an Apple hardware engineer who turned into a wireless networking entrepreneur. In 2005, he struck out on his own with the goal of bringing affordable internet access to the world's emerging markets. Within six years he became a billionaire when his Ubiquiti Networks went public in October 2011. His net worth is 1.5 billion.