Alexsandro Pereira (born 7 July 1987), commonly known as Alex Pereira or sometimes Alex Sandro, is a Brazilian kickboxer and mixed martial artist who competes in the middleweight division. Most notably, he is the former GLORY Middleweight and Light Heavyweight champion, and has also competed in promotions such as Kunlun Fight, SUPERKOMBAT Fighting Championship and It's Showtime.

As of February 2021, he is ranked the #1 middleweight, the #1 light-heavyweight and the #6 pound for pound fighter in the world by Combat Press.[2] He first entered the middleweight rankings in October 2019,[3] and the pound for pound rankings in October 2018.[4] He's been ranked in the middleweight top ten by Combat Press ever since the rankings were first introduced in September 2014.[5]

In mixed martial arts, Pereira has been signed to the Ultimate Fighting Championship (UFC) since September 2021.