United States v. Microsoft Corp. was a 2001 U.S. antitrust law case.
United States v. Microsoft Corp. may also refer to: Microsoft Corp. v. United States, a data privacy case that was appealed to the U.S. Supreme Court as United States v. Microsoft Corp. during the 2017–2018 term
See also Microsoft v. United States (2016) FTC v. Microsoft (2022) related to Acquisition of Activision Blizzard by Microsoft