- M.C.J.
- Mackinnon, Catharine Alice
- Macpherson v. Buick Motor Co.
- Macveagh, Isaac Wayne
- Madison, James
- Magistrate
- Magna Charta
- Magna Charta
- Magnuson-Moss Warranty Act
- Mail Cover
- Mail Fraud
- Maine, Henry James Sumner
- Maintenance
- Maitland, Frederic William
- Majority
- Maker
- Mala Fides
- Mala in Se
- Mala Prohibita
- Malcolm X
- Malfeasance
- Malice
- Malice Aforethought
- Malicious
- Malicious Mischief
- Malicious Prosecution
- Malpractice
- Man-in-the-House Rule
- Managed Care
- Manager
