Bezos' 2017 is the biggest single year gain since Forbes began tracking the uber-wealthy back in 1987.
Mr Trump, the first billionaire president, stepped away from his businesses when he entered the White House, handing control to his two eldest sons, Don Jr. and Eric.
Luisa Kroll and Kerry Dolan, from Forbes Media, said: "The superrich continue to get richer, widening the gap between them and everyone else".
Bernard Arnault - The first member of the list not to come from the USA has a net worth of $72 billion and calls France his home.
The world's richest self-made woman is Hong Kong's Zhou Qunfei, founder of smartphone screen maker Lens Technology.
Donald Trump has crashed 222 places on the Forbes annual World's Billionaires list, after his fortune fell by $US400 million ($511 million) since he became US President previous year.
The Forbes' billionaires list is based on share prices and other financial data on 9 February 2018.
It said that Trump's net worth had fallen by $400m (£287m) to $3.1bn over the past year.
Meanwhile, Trump, who became the first billionaire president in history a year ago, dropped to No. 766 on the list, with a $3.1 billion net worth.
According to Daily News, Trump Tower, the President's NY home, lost an estimated $41 million in value a year ago.
Trump fared better in Forbes's ranking than in Bloomberg's billionaires list, which put his net worth at 2.86bn dollars.