21. Hamad bin Jassim bin Jaber Al Thani

Net Worth: $1.8 B
Age: 64
Residence: Qatar
Nationality: Qatari
Industry: Finance & Investments

Hamad bin Jassim Al Thani was prime minister of Qatar between 2007 and 2013; he also served as foreign minister from 1992 until 2013. His great-uncle founded modern Qatar in 1971, and he's a cousin of the current Emir. Through an entity called Paramount Services Holdings, Al Thani owns 3% of Deutsche Bank, his biggest publicly traded holding. In 2016, he was mentioned in the “Panama Papers,” leaked files from Panama law firm Mossack Fonseca, which set up offshore entities for clients.