Salland is a historical dominion in the west and north of the present Dutch province of Overijssel. Nowadays Salland is usually used to indicate a region corresponding to the part of the former dominion more or less to the west of Twente.
Salland (or Salalant, as it was known) is first mentioned during the early Middle Ages. The region is most likely named after the river IJssel, anciently known as Isala, and the lakeland Sallzee at the confluence of the rivers Vecht and IJssel. The region may be the original residence of the Salian Franks.
Salalant at this time was a shire (gouw) made up of the area between Wijhe, Mastenbroek, and Dalfsen, in other words, the region circling Zwolle. In 795, Salalant belonged to a count Wracharius and remained in his family until the 11th century. In 814, mention is made of a Salahom, located where the IJssel empties into to the Sallzee, and of its acquisition by the Lorsch Abbey (near Worms). In 1086, the four parts of Oversticht (i.e., Salland, Twente, Vollenhove, and Drenthe) belonged first to Egbert III, descendant of Wracharius, and count of Salland, Westergo, and Estergo, but were confiscated by Holy Roman Emperor Henry IV, given to the Prince-Bishopric of Utrecht, and incorporated into the margravate of Islegowe.
Salalant gradually grew to the south as far as the rivers Meppelerdiep and Reest and to the west as far as the Regge. In 1046 Deventer and its vicinity belonged to the county of Hamaland but was incorporated along with the area between Dalfsen and Gramsbergen into Salland in 1246. In 1225, the office of episcopal sheriff (bisschoppelijke schout) for Salland was established, and in 1308 the bishop granted a dike-right (dijkrecht) over the land between the Hunnepe to the coast; this area later became known as the Salland sheriffdom (Sallandse Schouw). In 1336, the bishop pledged over almost all of Overijssel - including Salland - to the count of Guelders. Ten years later, the new bishop, Jan van Arkel, was able to retrieve the pledged territories. He also reformed administration by breaking Oversticht into the three sheriffdoms of Twente, Vollenhove, and Salland. In time they were demoted to bailiwicks (drostambten), and even though they were superseded by the sheriffdoms of IJsselmuiden, Diepenheim, Haaksbergen, and the sheriff of Hasselt was made high sheriff, the original three bailiwicks have nonetheless served as the basis for Oversticht's three-way division to this day.