Criminals and dictators tend not to publish reliable information on their assets. Neither do many of the world’s richest people. Also, criminals and dictators have other assets in terms of loyal supporters, influence, power, military, etc. And foreign countries, especially semi-isolated dictatorships, often have rather different economies, exchange rates, etc. I expect the richest also may tend to invest heavily in anonymity and in hiding their wealth. We wouldn’t even know who to research. But some known public (and/or Internet BS) data points of who knows what accuracy: Hosni Mubarak (ousted Egyptian president) $70–700 billion Muammar Gaddafi (dictator, dead) $200 billion Bashar al-Assad (Syrian president) $122 billion Bill Gates (CEO niceguy) $88 billion Jeff Bezos (CEO egotist) $84 billion Vladimir Putin (Russian PM) $70 billion Ali Abdullah Saleh (former Yemeni president) $32 – 60 billion Koch bros (figurehead scumbag government corrupters) $41 – 48 billion Mikhail Prokhorov (Russian mafia) $18 billion Rupert Murdoch (corporatocratic media monopolist) $14 billion Dawood Ibrahim (Indian mafia) $6.7 billion Edward Sil Gotierelli (Italian mafia) $5.5 billion Giovanni Motisi (Italian mafia) $5.35 billion John Difronzo (Italian/US mafia) $5.2 billion Kim Jong-un (North Korean dictator) $5 billion Semion Mogilevich (Ukrainian mafia) $5 billion Matteo Messina Denaro (Italian mafia) $4.9 billion Omar Trevino Morales (Mexican mafia) $4.75 billion John Ericson Vargas Cardona (Colombian mafia) $4.7 billion Ismael Zambada Garcia (Mexican mafia) $4.6 billion Donald Trump (criminally awful figurehead POTUS) $3.5 billion Igor Makarov (Russian mafia) $1.9 billion Servando Gomez Martinez (Mexican mafia) $1.2 billion Teodoro Obiang Nguema Mbasogo (President of Equatorial Guinea since 1979, accused cannibal) $500 million Zine al Abidine Ben Ali (ousted President of Tunisia) $50 million