List of ancient peoples of Portugal

In what is today's mainland Portugal territory, before the rule of the Roman Empire, several peoples and tribes were living there for many centuries and they had their own culture, language and political organization (tribal chiefdoms, tribal confederations and early forms of kingdoms and states), these peoples and tribes were in the Iron Age. Nearly all or maybe all of these peoples and tribes were Celtic Indo-Europeans (Hispano-Celtic/Iberian Celts), Pre-Celtic Indo-Europeans or heavily celticized peoples.

Source: Wikipedia — List of ancient peoples of Portugal (CC BY-SA 4.0)