Swedes (Swedish: svenskar) are a Germanic ethnic group native to Sweden. They mostly inhabit Sweden and the other Nordic countries, in particular Finland, with a substantial diaspora in other countries, especially the United States.
The English term "Swede" has been attested in English since the late 16th century and is of Middle Dutch or Middle Low German origin. In Swedish, the term is svensk, which is believed to have been derived from the name of svear (or Swedes), the people who inhabited Svealand in eastern central Sweden, and were listed as Suiones in Tacitus' history Germania from the 1st century AD. The term is believed to have been derived from the Proto-Indo-European reflexive pronominal root, *s(w)e, as the Latin suus. The word must have meant "one's own (tribesmen)". The same root and original meaning is found in the ethnonym of the Germanic tribe Suebi, preserved to this day in the name Swabia.
Sweden enters proto-history with the Germania of Tacitus in 98 AD. In Germania 44, 45 he mentions the Swedes (Suiones) as a powerful tribe (distinguished not merely for their arms and men, but for their powerful fleets) with ships that had a prow in both ends (longships). Which kings (kuningaz) ruled these Suiones is unknown, but Norse mythology presents a long line of legendary and semi-legendary kings going back to the last centuries BC. As for literacy in Sweden itself, the runic script was in use among the south Scandinavian elite by at least the 2nd century AD, but all that has survived from the Roman Period is curt inscriptions on artefacts, mainly of male names, demonstrating that the people of south Scandinavia spoke Proto-Norse at the time, a language ancestral to Swedish and other North Germanic languages.
In the 6th century Jordanes named two tribes, which he calls the Suehans and the Suetidi, who lived in Scandza. These two names are both considered to refer to the same tribe. The Suehans, he says, has very fine horses just as the Thyringi tribe (alia vero gens ibi moratur Suehans, quae velud Thyringi equis utuntur eximiis). The Icelander Snorri Sturluson (1179–1241) wrote of the 6th-century Swedish king Adils (Eadgils) that he had the finest horses of his days. The Suehans supplied black fox-skins for the Roman market. Then Jordanes names the Suetidi which is considered to be the Latin form of Svitjod. He writes that the Suetidi are the tallest of men—together with the Dani, who were of the same stock. Later he mentions other Scandinavian tribes as being of the same height.
Originating in semi-legendary Scandza (believed to be somewhere in modern Götaland, Sweden), a Gothic population had crossed the Baltic Sea before the 2nd century AD. They reaching Scythia on the coast of the Black Sea in modern Ukraine, where Goths left their archaeological traces in the Chernyakhov culture. In the 5th and 6th centuries, they became divided as the Visigoths and the Ostrogoths, and established powerful successor-states of the Roman Empire in the Iberian peninsula and Italy respectively. Crimean Gothic communities appear to have survived intact in the Crimea until the late-18th century.