Valdemir dos Santos Pereira (born November 15, 1974, in Cruz das Almas, Bahia) is a Brazilian former professional boxer who competed from 2001 to 2006 and held the IBF featherweight title in 2006.
As an amateur Pereira represented Brazil at the 2000 Olympics, reaching the round of 16 of the featherweight bracket.
As an amateur, Pereira fought as a Featherweight for the Brazilian Olympic Team at the 2000 Summer Olympics in Sydney: Known as "Sertão", Pereira turned pro in 2001 and won the vacant IBF Featherweight Title with a decision victory over Fahprakorb Rakkiatgym in January 2006.
[1] He lost the title in his first defense, via disqualification against Eric Aiken later that year, due to excessive low blows.
He is now living at Cruz das Almas, Bahia, Brazil.