Portuguese-speaking world

The Portuguese-speaking world, also known as the Lusophone world (Portuguese: mundo lusófono), Lusophony (Lusofonia), or the Lusosphere (Portuguese: Lusoesfera) is the countries and territories in which the Portuguese language is an official, administrative, cultural, or secondary language. This article provides details regarding the geographical distribution of all Portuguese-speakers or Lusophones, regardless of legislative status. The prefix luso derives from the name of the ancient Roman province of Lusitania.

Portuguese is one of the most widely spoken languages in the world and is an official language of countries on four continents. The Community of Portuguese Language Countries (CPLP) is an international organization formed to facilitate cooperation between these countries.