| M7RC | Mini Seven Racing Club 
| Others |
| M8 | Mate
| Others |
| M8 | Mate (England)
| Others |
| M80 | Matey
| Others |
| M85 | 85 Percent / 15 Percent Unleaded Gasoline
| Others |
| M88A1 | Recovery Vehicle
| Others |
| M8C | Bmw M8 Competition
| Others |
| M8GC | Motorsport Eight Series Gran Coupe
| Others |
| M8S | Mates (Plural of Mate M8. Internet - Mostly used while Texting acronym)
| Others |
| M97 | Tunica Municipal Airport, Tunica, Mississippi USA
| Others |
| M99 | Saline County Airport/ Watts Field, Benton, Arkansas USA
| Others |
| M9K | murderthon 9000
| Others |
| M:-) | A salute
| Others |
| MA | M Annularis
| Others |
| MA | Macchina Agricola (agricultural vehicle)
| Others |
| MA | Made and Attempted
| Others |
| MA | Madimi And
| Others |
| MA | Magic And
| Others |
| MA | Magic Attack
| Others |
| MA | Magic Aura
| Others |
| MA | Magnitude And
| Others |
| MA | Mahmoud Ahmed
| Others |
| MA | Mail Art
| Others |
| MA | MAintenance
| Others |
| MA | Maintenance Ability
| Others |
| MA | Maintenance Agreement
| Others |
| MA | Major Award
| Others |
| MA | Making Access
| Others |
| MA | Malaca Ang
| Others |
| MA | Male Adult
| Others |
| MA | Male Attendant
| Others |
| MA | Mama And
| Others |
| MA | Management Action
| Others |
| MA | Mandelic Acid
| Others |
| MA | Mangled Audio
| Others |
| MA | Mannheim
| Others |
| MA | Manufacturing Assembly
| Others |
| MA | Marching Auxiliaries
| Others |
| MA | Marcus Absent
| Others |
| MA | Maremanno Abruzzesi
| Others |
| MA | Margaret Alzina
| Others |
| MA | Marginal Augmen
| Others |
| MA | Maria Ascencao
| Others |
| MA | Market Australia
| Others |
| MA | Marketing Association
| Others |
| MA | Marketing Authorisation
| Others |
| MA | Marketing Authorization
| Others |
| MA | Marshall Arts
| Others |
| MA | Marshalling Area
| Others |
| MA | Martha Anderson (china paintings)
| Others |