P
- Pacific Gas & Elec. Co. v. State Energy Resources Conservation & Development Comm'n461 U.S. 190 (1983)
- Palazzolo v. Rhode Island533 U.S. 606 (2001)
- Panama Refining Co. v. Ryan293 U.S. 388 (1935)
- Penn Central Transportation Co. v. New York City438 U.S. 104 (1978)
- Pennsylvania Coal Co. v. Mahon260 U.S. 393 (1922)
- Plaut v. Spendthrift Farm, Inc.514 U.S. 211 (1995)
- Poe v. Ullman367 U.S. 497 (1961)
- Powell v. Mccormack395 U.S. 486 (1969)