Wallia, Walha or Vallia, was king of the Visigoths from 415 to 418, earning a reputation as a great warrior and prudent ruler. He was elected to the throne after Athaulf and Sigeric were both assassinated in 415. One of Wallia's most notable achievements was negotiating a foedus with the Roman emperor Honorius in 416. This agreement allowed the Visigoths to settle in Aquitania, a region in modern-day France, in exchange for military service to Rome. This settlement marked a significant step towards the eventual establishment of a Visigothic kingdom in the Iberian Peninsula. He was succeeded by Theodoric I.

Athaulf was king of the Visigoths from 411 to 415. During his reign, he transformed the Visigothic state from a tribal kingdom to a major political power of Late Antiquity.