The Universities of Wisconsin is a university system of public universities in the U.S. state of Wisconsin. It is one of the largest public higher-education systems in the country, enrolling more than 160,000 students each year and employing approximately 41,000 faculty and staff statewide. The system is headquartered in the state capital of Madison.

A university system is a set of multiple affiliated universities and colleges that are usually geographically distributed. Typically, all member universities in a university system share a common component among all of their various names. Usually, all member universities of a university system are governed by a system-wide governing body, such as a board of trustees or a board of regents. In the United States, many states have one or two state university systems under which many of their publicly funded universities are aligned, both in name and in governance. Additionally, for-profit universities, such as DeVry University, often have multiple campuses which share the same name; these may be, but are not always, described as a university system.