This refers to the organization that manages Memorial Union, Union South, and other Union activities. Use Memorial Union or Union South to refer to the physical buildings. The Wisconsin Union (organization) prefers that people use Union only when referring to activities sponsored by the Wisconsin Union — not to specific locations — but students and alumni often use Union to refer to Memorial Union. The Wisconsin Union is a private entity that’s separate from UW–Madison, so do not use UW–Madison Union or UW Union.