Encyclopedias, Almanacs, Transcripts, and Maps
- South Carolina v. Katzenbach 383 U.S. 301 (1966)
- South Dakota v. Neville 459 U.S. 553 (1983)
- South Korea, Intelligence and Security
- South-Eastern Underwriters Association v. United States 322 U.S. 533 (1944)
- Southern Manifesto (March 11, 1956)
- Southern Pacific Co. v. Arizona 325 U.S. 761 (1945)
- Sovereign Immunity
- Sovereign Immunity (Update)
- Soviet Union (USSR), Intelligence and Security
- Spaight, Richard Dobbs (1758–1802)
- Spain, Intelligence and Security
- Special Collection Service, United States
- Special Counsel and Security Related "Whistleblower" Protection Issues, United States Office
- Special Master
- Special Prosecutor
- Special Relationship: Technology Sharing Between the Intelligence Agencies of the United States and United Kingdom
- Speech or Debate CLAUSE
- Speech to the Officers' Club
- Speeches to the Knesset
- Speedy Trial (Update 1)