| Abbreviation | Definition |
|---|---|
| MC | Merry Christmas |
| MCCA | Major Cities Chiefs Association |
| MCCC | Mid-Cities Commodore Computer |
| MCOG | Mysterious Cities Of Gold |
| MCR | Making Cities Resilient |
| MIMC | Made in Maximum City |
| MLCT | Montana League of Cities and Towns |
| MLCT | Montana List of Cities and Towns |
| MPY | Mikkelin Puhelin Oyj |
| MSQ | Madinat Al Sultan Qaboos |
| MWC | MidWest City |
| NASC | North Augusta, South Carolina |
| NCVS | Northern Cities Vowel Shift |
| NFW | North Fort Worth |
| NGC | Next Generation City |
| NJC | New Jack City |
| NMC | Nearest Metro City |
| NOBA | North Baltimore |
| NQBH | Neutraler Quartierverein Bachletten-Holbein |
| NRBG | Nature Reserve Burial Grounds |