The Veleti (German: Wieleten; Polish: Wieleci) or Wilzi(ans) (also Wiltzes; German: Wilzen) were a group of medieval Lechites tribes within the territory of modern northeastern Germany; see Polabian Slavs. In common with other Slavic groups between the Elbe and Oder Rivers, they were often described by Germanic sources as Wends. In the late 10th century, they were continued by the Lutici. In Einhard's Vita Karoli Magni, the Wilzi are said to refer to themselves as Welatabians.
The Veleti moved into modern Mecklenburg-Vorpommern and adjacent southern areas from the south in the course of the 6th-7th centuries, assimilating the remaining Germanic population and West Slav tribes that had previously moved into that area from the east. The Bavarian Geographer's anonymous medieval document compiled in Regensburg in 830 contains a list of the tribes in Central Europe east of the Elbe. Among other tribes it also lists the Uuilci (Veleti), featuring 95 civitas.
The Veleti did not remain a unified tribe for long. Local tribes developed, the most important being: the Kissini (Kessiner, Chizzinen, Kyzziner) along the lower Warnow and , named after their capital Kessin; the Circipani (Zirzipanen) along the Trebel and Peene Rivers, with their capitol believed to be Teterow and strongholds in Demmin and probably even Güstrow; the Tollenser east and south of the Peene along the Tollense River; and the Redarier south and east of the Tollensesee on the upper Havel. The Hevelli living in the Havel area and, though more unlikely, the Rujanes of Rugia might once have been part of the Veletians. Even the Leitha region of Lower Austria may been named for a tribe of Veneti, the Leithi.