Encyclopedias, Almanacs, Transcripts, and Maps
- Silverthorne Lumber Co. v. United States 251 U.S. 385 (1920)
- Simon v. Eastern Kentucky Welfare Rights Organization 426 U.S. 26 (1976)
- Sims' Case 7 Cushing (Mass.) 285 (1851)
- Single-Sex Education
- Sinking Fund Cases Union Pacific Railroad Co. v. United States 99 U.S. 700 (1879) Central Pacific Railroad Co. v. Gallatin 99 U.S. 727 (1879)
- Sipuel v. Oklahoma State Board of Regents 332 U.S. 631 (1948)
- Sit-In
- Skinner v. Oklahoma 315 U.S. 535 (1942)
- Skinner v. Railway Labor Executives Association 489 U.S. 602 (1989)
- Slaughterhouse Cases 16 Wallace 36 (1873)
- Slavery and Civil Liberties
- Slavery and Property
- Slavery and the Constitution
- Slavery in the Territories
- Slovakia, Intelligence and Security
- Slovenia, Intelligence and Security
- Smith v. Allwright 321 U.S. 649 (1944)
- Smith, J. Allen (1860–1924)
- Smyth v. Ames 169 U.S. 466 (1898)
- Snepp v. United States 444 U.S. 507 (1980)