6) Ryan Kavanaugh – Net Worth: $1 Billion

Youngest on the list with a net worth of $1 billion as of 2013, according to Forbes. This American movie producer and financer is the founder and current CEO of the movie studio Relativity Media. He has earned the nickname “Billion dollar producer.” His productions include Immortals, The Fighter, Mirror Mirror, Safe Haven, Beyond the Lights and he was executive producer of the 2010 film The Social Network.

=4) Cameron Mackintosh – Net Worth: $1.1 Billion

This British theatrical producer earned his fortune from his association with many commercially successful musicals. In 2011, the Sunday Times estimated his wealth £675 million ($1.1 billion).