Encyclopedias, Almanacs, Transcripts, and Maps
- Unwritten Constitution
- Uphaus v. Wyman 360 U.S. 72 (1959)
- USAMRICD (United States Army Medical Research Institute of Chemical Defense)
- USAMRIID (United States Army Medical Research Institute of Infectious Diseases)
- USSTRATCOM (United States Strategic Command)
- Vagrancy Laws
- Vagueness
- Vallandigham, Ex Parte 1 Wallace 243 (1864)
- Valley Forge Christian College v. Americans United FOR Separation OF Church AND State 454 U.S. 464 (1982)
- Value Pluralism and the Constitution
- Van Buren, Martin (1782–1862)
- Van Devanter, Willis (1859–1941)
- Van Horne's Lessee v. Dorrance 2 Dallas 304 (1795)
- Vattel, Emerich De (1714–1767)
- Veazie Bank v. Fenno 8 Wallace 533 (1869)
- Venezuela, Intelligence and Security
- Venona
- Vermont Constitution OF 1777 (July 8, 1777)
- Vested Rights
- Veto Power