Encyclopedias, Almanacs, Transcripts, and Maps
- Ancillary Jurisdiction
- Animals in Sports
- Annexation of Texas
- Anonymous Political Speech
- Anthony, Susan Brownell (1820–1906)
- Anthrax Vaccine
- Anthrax Weaponization
- Anti-Abortion Movement
- Anti-Abortion Movement (Update)
- Anti-Federalist Constitutional Thought
- Anti-Imperialist Territorial Nuclei (NTA)
- Antidiscrimination Legislation
- Antidiscrimination Legislation (Update 1)
- Antidiscrimination Legislation (Update 2a)
- Antidiscrimination Legislation (Update 2b)
- Antiterrorism and Effective Death Penalty Act 110 Stat. 1214 (1996)
- Antitrust Law
- Apex Hosiery Company v. Leader 310 U.S. 469 (1940)
- Appalachian Electric Power Company v. United States 311 U.S. 377 (1940)
- Appellate Jurisdiction