Guilherme Viana (born May 13, 1986) is a Brazilian mixed martial artist formerly competing in Bellator's Light Heavyweight division.
He quickly compiled a 4–1 record, with his lone loss being against former UFC and Bellator competitor Rodney Wallace, before appearing on The Ultimate Fighter: Brazil 3.
In February 2014, Viana was revealed as one of the contestants on The Ultimate Fighter: Brazil 3, competing as a heavyweight.
[2] In the fight to get into the house, Viana lost to eventual winner of the heavyweight tournament Antônio Carlos Júnior via TKO in the first round, thus being eliminated from the competition.
After a conservative first round from both fighters, Viana lost the fight via TKO due to punches in the second.