There's more than one place called '''Olivenca''', '''Olivenca''', or '''Olivenza''':

Brazil

  • Olivenca - a municipality in the state of Alagoas
  • Sao Paulo de Olivenca - a municipality in the state of Amazonas (Brazil)
  • Portugal / Spain

  • Olivenza (Olivenca) - a town administered as part of Badajoz, in Extremadura, Spain, but also claimed by Portugal