Encyclopedias, Almanacs, Transcripts, and Maps
- Moore v. City of East Cleveland 431 U.S. 494 (1977)
- Moore v. Dempsey 261 U.S. 86 (1923)
- Moore, Alfred (1755–1810)
- Moose Lodge #107 v. Irvis 407 U.S. 163 (1972)
- Mootness
- Mootness (Update)
- Morehead v. New York Ex Rel. Tipaldo 298 U.S. 587 (1936)
- Morgan v. Virginia 328 U.S. 373 (1946)
- Morocco, Intelligence and Security
- Morrill Act 12 Stat. 503 (1862)
- Morris, Gouverneur (1752–1816)
- Morris, Robert (1734–1806)
- Morrow, William W. (1843–1929)
- Motion Sensors
- Mount Weather
- Movies, Espionage and Intelligence Portrayals
- Mueller v. Allen 463 U.S. 388 (1983)
- Mugler v. Kansas 123 U.S. 623 (1887)
- Mujahedin-e Khalq Organization (MEK or MKO)
- Muller v. Oregon 208 U.S. 412 (1908)