Alex Silva (born October 10, 1982) is a Brazilian former mixed martial artist, who competed in the Strawweight division for the ONE Championship, he is a former ONE Strawweight World Champion.
Silva made his debut against Geje Eustaquio on February 11, 2012, at . He lost the bout via unanimous decision.
Silva faced Rene Catalan on April 5, 2013, at . He won the fight via armbar submission in the first round.
Silva faced Ruel Catalan on December 11, 2015, at . He won the bout via kneebar submission in the first round.
Silva faced Robin Catalan on March 18, 2016, at . He won the bout via arm-triangle choke submission in the first round.
Silva faced former ONE Strawweight World Championship challenger Roy Doliguez on February 11, 2017, at . He won the bout via armbar submission in the third round.
Silva faced Hayato Suzuki on November 10, 2017, at . He won the bout via armbar submission in the first round.
Silva faced Yoshitaka Naito for the ONE Strawweight World Championship at on December 9, 2017. He won the bout via unanimous decision and capture the ONE Strawweight World Championship.
Silva then faced Naito in a rematch on May 12, 2022, at . He lost the bout and the title via split decision.
Silva faced Yosuke Saruta on December 7, 2018, at . He lost the fight via unanimous decision.
Silva faced Yoshitaka Naito in a third time on May 17, 2019, at . He lost the bout via unanimous decision.
Silva faced Stefer Rahardian on August 16, 2019, at . He won the fight via armbar submission in the second round.
Silva faced Peng Xue Wen on November 22, 2019, at . He won the fight via armbar submission in the second round.
Silva faced Joshua Pacio for the ONE Strawweight World Championship on January 31, 2020, at . He lost the fight via split decision.
Silva faced Hiroba Minowa at on February 26, 2021, and aired on March 19, 2021. He lost the fight via split decision.
Silva faced Miao Li Tao at on July 30, 2021, and aired on August 13, 2021. He won the fight via unanimous decision.
Silva faced Rene Catalan in a rematch at on October 29, 2021, and aired on November 26, 2021. He won the fight via armbar submission in the first round.
Silva faced Adrian Mattheis on March 11, 2022, at . He lost the fight via 5 second technical knockout in the second round. Though Silva protested referee Mohamed Sulaiman that he could still fight.
A rematch against Mattheis that took place on June 3, 2022, at ONE 158. He won the fight via heel hook submission in the first round. This win earned him the Performance of the Night award.
Silva faced Gustavo Balart on October 21, 2022, at ONE 162. At the weigh-ins, Balart failed the hydration test and was forced to take catchweight of 130.75 lbs, 5.75 lbs over the strawweight limit. He lost the fight via split decision.
Silva faced Keito Yamakita on March 25, 2023, at ONE Fight Night 8. He lost the fight via unanimous decision.
|- |Loss |align=center| 12âÂÂ9 |Keito Yamakita |Decision (unanimous) |ONE Fight Night 8 | |align=center| 3 |align=center| 5:00 |Kallang, Singapore | |- | Loss | align=center| 12âÂÂ8 | Gustavo Balart | Decision (split) | ONE 162 | | align=center| 3 | align=center| 5:00 | Kuala Lumpur, Malaysia | |- | Win | align=center| 12âÂÂ7 | Adrian Mattheis | Submission (heel hook) | ONE 158 | | align=center| 1 | align=center| 3:34 | Kallang, Singapore | |- | Loss | align=center| 11âÂÂ7 | Adrian Mattheis | TKO (punches) | | | align=center| 2 | align=center| 0:05 | Kallang, Singapore | |- | Win | align=center| 11âÂÂ6 | Rene Catalan | Submission (armbar) | | | align=center| 1 | align=center| 3:35 | Kallang, Singapore | |- | Win | align=center| 10âÂÂ6 | Miao Li Tao | Decision (unanimous) | | | align=center| 3 | align=center| 5:00 | Kallang, Singapore | |- | Loss | align=center| 9âÂÂ6 | Hiroba Minowa | Decision (split) | | | align=center| 1 | align=center| 1:41 | Kallang, Singapore | |- | Loss | align=center| 9âÂÂ5 | Joshua Pacio | Decision (split) | | | align=center| 5 | align=center| 5:00 | Pasay, Philippines | |- | Win | align=center| 9âÂÂ4 | Peng Xue Wen | Submission (armbar) | | | align=center| 2 | align=center| 4:45 | Kallang, Singapore | |- | Win | align=center| 8âÂÂ4 | Stefer Rahardian | Submission (armbar) | | | align=center| 2 | align=center| 4:55 | Bangkok, Thailand | |- | Loss | align=center| 7âÂÂ4 | Yoshitaka Naito | Decision (unanimous) | | | align=center| 3 | align=center| 5:00 | Kallang, Singapore | |- | Loss | align=center| 7âÂÂ3 | Yosuke Saruta | Decision (unanimous) | | | align=center| 3 | align=center| 5:00 | Kuala Lumpur, Malaysia | |- | Loss | align=center| 7âÂÂ2 | Yoshitaka Naito | Decision (split) | | | align=center| 5 | align=center| 5:00 | Jakarta, Indonesia | |- | Win | align=center| 7âÂÂ1 | Yoshitaka Naito | Decision (unanimous) | | | align=center| 5 | align=center| 5:00 | Bangkok, Thailand | |- | Win | align=center| 6âÂÂ1 | Hayato Suzuki | Submission (armbar) | | | align=center| 1 | align=center| 1:22 | Pasay, Philippines | |- | Win | align=center| 5âÂÂ1 | Roy Doliguez | Submission (armbar) | | | align=center| 3 | align=center| 2:36 | Kuala Lumpur, Malaysia | |- | Win | align=center| 4âÂÂ1 | Robin Catalan | Submission (arm-triangle choke) | | | align=center| 1 | align=center| 4:25 | Yangon, Myanmar | |- | Win | align=center| 3âÂÂ1 | Ruel Catalan | Submission (kneebar) | | | align=center| 1 | align=center| 3:53 | Pasay, Philippines | |- | Win | align=center| 2âÂÂ1 | Rene Catalan | Submission (armbar) | | | align=center| 1 | align=center| 4:54 | Kallang, Singapore | |- | Loss | align=center| 1âÂÂ1 | Geje Eustaquio | Decision (unanimous) | | | align=center| 3 | align=center| 5:00 | Jakarta, Indonesia | |- | Win | align=center| 1âÂÂ0 | Suchat Lukamkuha | Submission (rear-naked choke) | DARE 2/11 | | align=center| 1 | align=center| 2:12 | Bangkok, Thailand | |-