Raimundo Teixeira Mendes (5 January 1855 – 28 June 1927) was a Brazilian philosopher and mathematician.
Teixeira Mendes was heavily influenced by Comtism and is classed as a "Humanity Apostle" by Brazil's Religion of Humanity, which is called "Igreja Positivista do Brasil" or in English "Positivist Church of Brazil.
For him the Positivist viewpoint meant he opposed most wars and believed in the eventual disappearance of nations.
He also opposed Christian missionary work toward the indigenous Brazilians and instead favored a policy based on protection and gradual assimilation.
He deemed their societies "fetishistic", but believed a gradual non-coercive assimilation was the way to turn them into Positivists.