- 44 Liquormart, Inc. v. Rhode Island
- A.L.A. Schechter Poultry Corporation v. United States
- Aaron Burr Trial
- Abington School District v. Schempp
- Ableman v. Booth and United States v. Booth
- Abrams v. Johnson
- Abrams v. United States
- Adair v. United States
- Adams v. Williams
- Adamson v. California
- Adderley v. Florida
- Adkins v. Children's Hospital
- Adler et al. v. Board of Education of the City of New York
- Afroyim v. Rusk
- Airport Commissioners v. Jews for Jesus, Inc.
- Akron v. Akron Center for Reproductive Health
- Albertson v. Subversive Activities Control Board
- Allen v. Wright, and Donald T. Regan v. Inez Wright
- Allgeyer v. Louisiana
- Allied Structural Steel Co. v. Spannaus
- Alphabetical List of Court Cases
- Ambach v. Norwick
- Amchem Products v. Windsor
- American Civil Liberties Union v. Miller
- American Communications Association v. Douds
- American Libraries Association v. Pataki
- The Amistad
- Andrew Johnson Trial
- Apodaca v. Oregon
- Aptheker v. Secretary of State
