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- Mapco Petroleum, Inc. v. Memphis Barge Line, Inc.849 S.W.2d 312 (1993)
- Marathon Pipe Line Company v. Drilling Rig Rowan/Odessa761 F.2d 229 (5th Cir. 1985)
- Matute v. Lloyd Bermuda Lines, Ltd.931 F.2d 231 (3rd Cir. 1991)
- May v. Hamburg-Amerikanische Packetfahrt Aktiengesellschaft290 U.S. 333 (1933)
- Mccormick v. United States680 F.2d 345 (5th Cir. 1982)
- Mccorpen v. Central Gulf Steamship Corporation396 F.2d 547 (5th Cir. 1968)
- Mcdermott International, Inc. v. Wilander498 U.S. 337 (1991)
- Mcdermott, Inc. v. Amclyde & River Don Castings, Ltd.511 U.S. 202 (1994)
- Mediterranean Shipping Company S.A. Geneva v. Pol-Atlantic229 F.3d 397 (2nd Cir. 2000)
- Miles v. Apex Marine Corporation498 U.S. 19 (1990)
- Mobil Oil Corp. v. Higginbotham436 U.S. 618 (1978)
- Monessen Southwestern Railway Co. v. Morgan486 U.S. 330 (1988)
- Moragne v. States Marine Lines, Inc.398 U.S. 375 (1970).
- Morales v. Garijak Inc.829 F.2d 1355 (5th Cir. 1987)
- Morehead v. Atkinson-Kiewit, J/V,97 F.3d 603 (1st Cir. 1996)