The Concordia University System (CUS) is an organization of five colleges and universities and one satellite campus in the United States that are operated by the Lutheran Church – Missouri Synod (LCMS). All of the institutions are named "Concordia"—a reference to the Latin title of The Book of Concord, the collection of Lutheran confessions—and all include professional church work programs as part of their curricula. The CUS was formed in 1992. In 2011, 28,421 students attended Concordia University System institutions. In 2021, the official website for the system claimed an enrollment of over 35,000 students.