- Sherbert v. Verner
- Shimp v. New Jersey Bell Telephone Company
- Sieling v. Eyman
- Silkwood v. Kerr-McGee
- Simon & Schuster v. Members of the New York State Crime Victims Board
- Skinner v. Oklahoma
- Skinner v. Railway Labor Executives' Assn.
- Slaughterhouse Cases
- Slochower v. Board of Education of New York
- Smith v. Allwright
- Smith v. Daily Mail Publishing Co.
- Snepp v. United States
- Soldal v. Cook County
- Solem v. Helm
- South Carolina v. Baker
- South Carolina v. Katzenbach
- South Dakota v. Dole
- Southern Pacific Co. v. Arizona
- Speiser v. Randall
- Stafford v. Wallace
- Stanford v. Kentucky
- Stanley v. Georgia
- Stanton v. Stanton
- State of Missouri ex rel. Gaines v. Canada
- State of Missouri v. Holland
- Stearns v. Minnesota
- Steward Machine Co. v. Davis
- Stone v. Graham
- Strauder v. West Virginia
- Stromberg v. California
