Araújo or Araujo or Arauxo (, ) is a Spanish Galician and Portuguese surname. The surname Araújo is of toponymic origin derived from a place where a nobleman held land. The place name Araújo is taken from the Galician and Old Portuguese word "araujo" which is a poisonous plant with white fragrant flowers known in Latin as Araujia sericifera. In Portugal it seems to be a habitational name from any of various places called Araújo: in Portugal, in Coimbra, Elvas, Estremoz, Lisbon, Torre de Moncorvo, Monção, Serpa, Setúbal, and Villa Verde.
In the 1988 film "Mystic Pizza", in which the protagonists' being Portuguese Americans is very important to the plot, they emphasize that their family name is Araújo and insist upon pronouncing it as it is pronounced in Portuguese.