- Plyler v. Doe
- Pocket Veto Case
- Poe v. Ullman
- Poelker v. Doe
- Pointer v. Texas
- Police Department of Chicago v. Mosley
- Pollock v. Farmers' Loan & Trust Company
- Pollock v. Farmers' Loan & Trust Company (rehearing)
- Pollock v. Williams
- Posadas de Puerto Rico v. Tourism Company of Puerto Rico, et al.
- Pottinger v. City of Miami
- Powell v. Alabama
- Powell v. McCormack
- Prigg v. Pennsylvania
- Prince v. Prince
- Printz v. United States
- Privacy
- Prize Cases
- Proprietors of the Charles River Bridge v. the Proprietors of the Warren Bridge
- Pruneyard Shopping Center v. Robins
- Puerto Rico v. Branstad
- Pulley v. Harris
