The Visigoths (Latin: Visigothi, Wisigothi, Vesi, Visi, Wesi, or Wisi) were one of two main branches of the later Goths, the Ostrogoths being the other. These tribes were among the Germanic peoples who spread through the late Roman Empire during Late Antiquity or the Migration Period. The Visigoths emerged out of the Gothic groups who entered the Roman Empire in and after 376 and defeated the Romans at the Battle of Adrianople in 378. The Visigoths invaded Italy under Alaric I and famously sacked Rome in 410 AD, eventually settling in Spain and Portugal, where they founded a powerful Kingdom.

After numerous years of migration, which led the Visigoths to compare themselves to the Biblical Hebrew people wandering for 40 years in the Sinai Desert, the Visigoths settled in southern Gaul as foederati of the Romans in 418. For unknown reasons, they soon fell out with their hosts and established their own kingdom with its capital at Toulouse. Extending their authority into Hispania at the expense of the Vandals, their rule in Gaul was ended by the Franks under Clovis I at the Battle of Vouillé in 507. Thereafter the only territory north of the Pyrenees that the Visigoths held was Septimania, such that their kingdom became limited to Hispania. The province came to be dominated by the Visigothic small governing elite at the expense of the Byzantine province of Spania and the Suebic Kingdom of Galicia.

The Visigothic Kingdom was a kingdom which occupied what is now southwestern France and the Iberian Peninsula from the 5th to 8th century AD. One of the Germanic successor states to the Western Roman Empire, it was originally created by the settlement of the Visigoths under King Wallia in the province of Aquitaine in south-west France by the Roman government and then extended by conquest over all of the Iberian peninsula. The Kingdom maintained independence from the Eastern Roman or Byzantine Empire, the attempts of which to re-establish Roman authority in Iberia were only partially successful and short-lived. By the early 6th century, the Kingdom's territory in Gaul had been lost to the Franks, save the narrow coastal strip of Septimania, but the Visigoth control of Iberia was secured by the end of that century with the submission of the Suebi and the Basques. The ethnic distinction between the indigenous Hispano-Roman population and the Visigoths had largely disappeared by this time (the Gothic language lost its last and probably already declining function as a church language when the Visigoths converted to Catholicism in 589).Liber Iudiciorum (completed in 654) abolished the old tradition of having different laws for Romans and for Visigoths. Most of the Visigothic Kingdom was conquered by Islamic troops from Morocco in 711 AD, only the northern reaches of Spain remaining in Christian hands. These gave birth to the medieval Kingdom of Asturias when a local landlord called Pelayo, most likely of Gothic origin, was elected Princeps by the Astures.