Cosmo Alexandre Moreira da Rocha (born 24 April 1982) is a Brazilian professional kickboxer and mixed martial artist.

Growing up, Alexandre competed in football and was talented, going on to play professionally, but ultimately chose to focus on a career in Muay Thai.

In 2009, Alexandre picked up his biggest kickboxing win as he defeated John Wayne Parr via TKO in the second round at Evolution 17: King of the Square Ring.

He defeated Nampon PKMuaythai via unanimous decision in the lackluster main event of Lion Fight 11 in Las Vegas on 20 September 2013.

[8] However, he did not apply for his visa in time and was unable to enter the country and so he was replaced by New Zealand's Brad Riddell who Parr defeated by unanimous decision.

[15] In August 2011, Alexandre signed a multi-fight deal with the Bellator Fighting Championships, a United States-based mixed martial arts promotion.

[22] Alexandre faced Juan Cervantes in a Muay Thai bout, his first fight after re-signing with the promotion, at ONE on Prime Video 4 on November 19, 2022.