Olivença

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

Brazil

 * Olivença - a municipality in the state of Alagoas
 * São Paulo de Olivença - a municipality in the state of Amazonas (Brazil)

Portugal / Spain

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