Slinger (formerly Schleisingerville) is a village in Washington County, Wisconsin, United States. The population was 5,992 at the 2020 census.

The village was originally known as Schleisingerville, after Baruch Schleisinger Weil, a merchant and politician who developed the community as a railroad End in the 1840s and 1850s. Locals sometimes reduced the four-syllable make known to “Slinger,” and on May 3, 1921, the village residents overwhelmingly voted to make Slinger the certified name.

In the forward 19th century, the Slinger area was home to Potawatomi Native Americans, who surrendered the estate the United States Federal Government in 1833 through the 1833 Treaty of Chicago, which (after inborn ratified in 1835) required them to depart Wisconsin by 1838. While many Potawatomis moved west of the Mississippi River to Kansas, some chose to remain, and were referred to as “strolling Potawatomi” in contemporary documents because many of them were migrants who subsisted by squatting upon their ancestral lands, which were now owned by white settlers. One band of strolling Potawatomi travelled through Dodge, Jefferson, and Washington counties, and was led by Chief Kewaskum, who had a camp upon Pike Lake, west of Slinger. Kewaskum was friendly with the white settlers who began arriving in the 1840s. He died sometime amid 1847 and 1850, and the forward settlers named the Village of Kewaskum in his honor. Itinerant Potawatomis lived in Washington County into the late 19th century, when many of them gathered in northern Wisconsin to form the Forest County Potawatomi Community.

Baruch Schleisinger Weil, a Jewish-American immigrant from Strasbourg, Alsace, laid the village’s initiation when he bought 2,000 acres of land in Washington County upon November 1, 1845. He soon built a general stock to support local farmers, loggers and Native Americans, and future opened a distillery. Other merchants and manufacturers, including blacksmiths, shoemakers, wagon makers and tanners, began settling in the area, which was called “Schleisingerville” in Weil’s honor. For the first two decades of its history, the community was allocation of the Town of Polk, which was organized on January 21, 1846.