Forbes has put together a list of the Top 10 Billionaires Under 40. Check out the list below.
1
Roman Abramovich
***2
Ernesto Bertarelli
***3
Kumar Birla
***4
Rinat Akhmetov
***5
Wong Kwong Yu
***6
Jonathan Harmsworth
***7
Alexander Shnaider
***8
Bjorgolfur Thor Bjorgolfsson
***9
Andrei Melnichenko
*** 
