The Vistulans or Vistulanians (Polish: Wiślanie) were an early medieval West Slavic tribe inhabiting western part of modern Lesser Poland. In the 9th century, they created a tribal state, with probable major centers in Kraków, Wiślica, Sandomierz, and Stradów. Probably around 874 they were subjugated by king Svatopluk I of Moravia, who was a contemporary of the emperor Arnulf, and the Vistulan duke was forced to accept baptism. After a later period of Czech domination, the Vistulan lands became controlled by the Polans in the late tenth century, and were incorporated into Poland.
The area inhabited by the Vistulans probably ranged from the foothills of the Carpathian Mountains in the south, to the sources of the Pilica and Warta in the north. In the east, it reached the Dunajec, and in the west, the Skawa. The first Slavic gords were not built here until the mid 8th century, which means that the Vistulans probably frequently migrated, changing locations. Even though some historians, such as Przemysław Urbanczyk, claim that the Vistulans did not exist, there are three documents which can be tied to this tribe. First is the so-called Pannonian Legend (The Life of St. Methodius), second is the Bavarian Geographer, and third is Alfred the Great's Germania.
Since the 8th century, the Vistulans began construction of spacious gords, whose areas frequently reached over 10 hectares. Most gords were ring-shaped, and located on hills. Among major ones were the gords at Kraków, Stradów, Demblin, Naszczowice, Podegrodzie, Stawy, Trzcinica, Wiślica and on Bocheniec hill in Jadowniki. Most probably, the capital of the Vistulans was located in Kraków, which is confirmed by the size of the local gord, together with a fortified stronghold, located on the Wawel hill. Furthermore, the Vistulans probably built several mounds, such as the Krakus Mound, but historians argue whether these are of earlier, Celtic origin.