The world's top 10 richest people in 2021 are Elon Musk – $273.5bn, Jeff Bezos – $194.2bn, Bernard Arnault – $177.1bn, Bill Gates – $138.3bn, Larry Page – $129.5bn, Mark Zuckerberg – $128.4bn, Sergey Brin – $124.6bn, Steve Ballmer – $120.7bn.