Marcos Oliveira (born June 21, 1978) is a professional Brazilian jiu-jitsu and mixed martial arts fighter from Brazil.

He competes in the heavyweight division of Brazilian jiu-jitsu.

Oliveira received his black belt in judo in 1995.

[2] In 2010, Oliveira was invited to compete in the Abu Dhabi Fighting Championship Open Weight Grand Prix.

[3] Oliveira went to Thailand to improve his striking before the final fight.