Alexandre Pantoja Passidomo (born April 16, 1990) is a Brazilian professional mixed martial artist.

[7][8][9][10] Pantoja faced fellow team Cejudo member Kai Kara-France in the quarterfinals, defeating him by unanimous decision and progressing through to the semifinals.

[11] Pantoja faced Hiromasa Ougikubo in the semifinals of the tournament and was defeated by unanimous decision, and it was soon announced that he had contracted with the UFC.

[12] Alexandre made his promotional debut on January 28, 2017, at UFC on Fox 23 against Eric Shelton.

[14] Pantoja faced Neil Seery on July 16, 2017 at UFC Fight Night 113.

[27] Pantoja faced Matt Schnell on December 21, 2019 at UFC Fight Night 165.

[32] Pantoja was expected to face promotional newcomer and the former Rizin FF Bantamweight champion Manel Kape on December 19, 2020 at UFC Fight Night 183.

[39] Pantoja was meant to fight for the UFC flyweight title but a knee injury forced him out of it.

[46] In his first title defense, Pantoja faced Brandon Royval in a rematch on December 16, 2023, at UFC 296.

[53] In his upcoming title defense, Pantoja is scheduled to compete against Kai Kara-France on April 12, 2025, at UFC 314.

After winning the UFC Flyweight Championship at UFC 290, Pantoja revealed in the post-fight interview that his father had abandoned his family, leaving his mother to raise him and his two brothers alone, and (facing the camera) asked his father if he was proud of him now.