PHOTOS: Amazon founder Jeff Bezos tops Forbes' world's richest person list No. 1) Amazon.com founder Jeff Bezos (age 53): Net worth (as of July 27, 2017) $90.9 billionPhoto by: Drew Angerer PHOTOS: Amazon founder Jeff Bezos tops Forbes' world's richest person list No. 2) Microsoft co-founder Bill Gates (age 61): Net worth (as of July 27, 2017) $90 billionPhoto by: Axel Schmidt/Pool PHOTOS: Amazon founder Jeff Bezos tops Forbes' world's richest person list No. 3) Zara founder Amancio Ortega (age 81): Net worth (as of July 27, 2017) $83.5 billionPhoto by: Pascal Le Segretain PHOTOS: Amazon founder Jeff Bezos tops Forbes' world's richest person list No. 4) Business investor Warren Buffett (age 86): Net worth (as of July 27, 2017) $74.2 billionPhoto by: Alex Wong PHOTOS: Amazon founder Jeff Bezos tops Forbes' world's richest person list No. 5) Facebook co-founder/CEO Mark Zuckerberg (age 33): Net worth (as of July 27, 2017) $71.6 billionPhoto by: Justin Sullivan PHOTOS: Amazon founder Jeff Bezos tops Forbes' world's richest person list No. 6) Business magnate/investor Carlos Slim Helu (age 77): Net worth (as of July 27, 2017) $68.9 billionPhoto by: Kimberly White/Getty Images for New York Times PHOTOS: Amazon founder Jeff Bezos tops Forbes' world's richest person list No. 7) Oracle co-founder/executive chairman Larry Ellison (age 72): Net worth (as of July 27, 2017) $62.1 billionPhoto by: Kimberly White PHOTOS: Amazon founder Jeff Bezos tops Forbes' world's richest person list No. 8) Bloomberg LP founder/CEO & former New York City mayor Michael Bloomberg (age 75): Net worth (as of July 27, 2017) $53.3 billionPhoto by: Joe Raedle PHOTOS: Amazon founder Jeff Bezos tops Forbes' world's richest person list No. 9) LVHM chairman/CEO Bernard Arnault (age 68): Net worth (as of July 27, 2017) $53.2 billionPhoto by: Drew Angerer