| Acronym | Meaning |
 | MKOP | My Kind Of Place |
| MLA | Multiple Letter Acronym |
| MLAS | My Lips Are Sealed |
| MM | Market Maker |
| MMHA2U | My Most Humble Apologies To You |
| MO | Move On |
| MOF | Matter Of Fact |
| MOFO | Mother F*cker |
| MOMPL | MOMent PLease |
| MOOS | Member Of The Opposite Sex |
| MOP | MOment Please |
| MORF | Male Or Female |
| MOS | Mom Over Shoulder |
| MOSS | Member(s) Of The Same Sex |
| MOTAS | Member Of The Appropriate Sex |
| MOTD | Message Of The Day |
| MOTOS | Member(s) Of The Opposite Sex |
| MOTSS | Member(s) Of The Same Sex |
| MPFB | My Personal F*ck Buddy |
| MRA | Moving Right Along |
| MSG | Message |
| MSMD | Monkey See Monkey Do |
| MSNUW | Mini-Skirt No UnderWear |
| MTBF | Mean Time Before Failure |
| MTF | More To Follow |
| MTFBWY | May The Force Be With You |
| MTLA | My True Love Always |
| MTSBWY | May The Schwartz Be With You |
| MUAH | The Sound Of A Kiss |
| MUBAR | Messed Up Beyond All Recognition |
| MUSM | Miss You So Much |
| MWAH | The Sound Of A Kiss |
| MWBRL | More Will Be Revealed Later |
| MYL | Mind Your Language |
| MYOB | Mind Your Own Business |
| N-A-Y-L | In A While |
| N/A | Not Applicable |
| N/A | Not Affiliated |
| N/M | Nothing Much |
| N/T | No Text |
| N1 | Nice One |
| N2M | Not To Mention |
| N2M | Not Too Much |
| N2MJCHBU | Not Too Much Just Chillin, How ABout YoU? |
| NA | No Access |
| NA | Not Applicable |
| NAB | Not A Blonde |
| NADT | Not A Damn Thing |
| NAGB | Nearly Almost A Good Bridge |
| NAK | Nursing At Keyboard |
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