United States v. Smith could refer to:
United States v. Smith, 18 U.S. (5 Wheat.) 153 (1820), on the definition of piracy United States v. Smith, 124 U.S. 525 (1888) United States v. Smith, 256 U.S. 11 (1921) United States v. Smith, 286 U.S. 6 (1932)
See also Smith v. United States (disambiguation)