M
- "Maggie" - HMS Magnificent; HMCS Magnificent
- "The Mighty Hood" - HMS Hood
- "Mighty O" - USS Oriskany
- "Mighty Mo" - USS Missouri
- "Mighty Moo" – USS Cowpens
- "Mobile Chernobyl" - USS Enterprise
- "Moskvitch" - Finnish navy Tuima class missile boats. Soviet-built Moskvitch cars had notoriously poor reputation in Finland.
Read more about this topic: List Of Warships By Nickname