The Suebi or Suevi (from Proto-Germanic *swēbaz based on the Proto-Germanic root *swē- meaning "one's own" people, from an Indo-European root *swe-, the third person reflexive pronoun) are a group of Germanic peoples who are first mentioned by Julius Caesar in connection with Ariovistus' campaign, c. 58 BCE; Ariovistus is defeated by Caesar.Some Suebi remain a periodic threat against the Romans on the Rhine, until, toward the end of the empire, the Alamanni, including elements of Suebi, brush aside Roman defenses and occupy Alsace, and from there Bavaria and Switzerland.

A pocket remains in Swabia (an area in southwest Germany whose modern name derives from the ancient name), whereas migrants to Gallaecia (modern Galicia, in Spain, and Northern Portugal) establish a kingdom there which lasts for 170 years until its integration into the Visigothic Kingdom.