Encyclopedias, Almanacs, Transcripts, and Maps
- Lujan v. Defenders of Wildlife 504 U.S. 555 (1992)
- Lurton, Horace H. (1844–1914)
- Luther v. Borden 7 Howard (48 U.S.) 1 (1849)
- Lynch v. Donnelly 465 U.S. 668 (1984)
- Lyng v. Northwest Indian Cemetery 485 U.S. 439 (1988)
- M. L. B. v. S. L. J. 519 U.S. 102 (1996)
- Macdonald, United States v. 456 U.S. 1 (1982)
- Macon, Nathaniel (1757–1837)
- Madden v. Kentucky 309 U.S. 83 (1940)
- Madison's "Memorial and Remonstrance" (1785)
- Madison's Notes of the Debates
- Madison, James (1751–1836)
- Madisonian Constitution
- Magna Carta (1215)
- Mahan v. Howell 410 U.S. 315 (1973)
- Maher v. Roe 432 U.S. 464 (1977)
- Malloy v. Hogan 378 U.S. 1 (1964)
- Mandamus, Writ of
- Mann Act 36 Stat. 825 (1910)
- Mann-Elkins Act 36 Stat. 539 (1910)