- Taxation
- Taylor v. Louisiana
- Tennessee v. Scopes
- Terminiello v. Chicago
- Terry v. Adams
- Terry v. Ohio
- Texas v. Johnson
- Texas v. White
- Thomas v. Collins
- Thomas v. Review Board of the Indiana Employment Security Division
- Thompson v. Oklahoma
- Thornburgh v. American College of Obstetricians and Gynecologists
- Thornhill v. Alabama
- Tierce v. Ellis
- Tilton v. Richardson
- Time, Inc. v. Firestone
- Timmons v. Twin Cities Area New Party
- Tinker v. Des Moines Independent Community School District
- Toth v. Quarles
- Train v. City of New York
- Trimble v. Gordon
- Trop v. Dulles
- Truax v. Raich
- Trustees of Dartmouth College v. Woodward
- Turner Broadcasting System v. Federal Communications Commission
- Twigg v. Mays
- Twining v. State of New Jersey
- Tyson & Brother v. Banton
