Rubens Valeriano Donizete (born 14 August 1979 in Monte Santo de Minas) is a Brazilian bicyclist who competed in the 2008 Summer Olympics and the 2012 Summer Olympics.

In 2000, he had to make a difficult decision and that would forever change his life, he stopped his paid work and devoted himself exclusively to cycling.

After many wins in competitions inside out outside of Brazil, his Olympic dream began in 2007.

He joined the national mountain bike team that competed in the Pan American Games in Rio de Janeiro, and took the silver medal.

[citation needed] In 2015 he was hired by Team AOO/Specialized, looking to the vacancy for the Olympic games in Rio de Janeiro 2016.