| Abbreviation | Definition |
|---|---|
| MINF | Math Is Not Fun |
| MKC | Miningkc |
| MKFD | Monkey Knife Fight Design (web design; UK) |
| MKSE | Might Know Something Else |
| MKV | Main Key Visual |
| MM | Match Making |
| MMBA | Multi-Market Broadband Access |
| MMC | MyMotionCalendar |
| MMSRI | My Militia Self Reliance Institute |
| MMTH | MoonManTheHater |
| MNbtW | More Novel by the Week |
| MOAE | Mayonnaise On An Escalator |
| MOBB | Month Of Browser Bugs |
| MOBE | Moti's Online Business Experience |
| MOJO | Michels Other Job Opportunities |
| MONDAQ | Monitor Online News And Quotes |
| MONGRO | Money Grow |
| MONGRO | Money Grow. #QueenDanielleLane |
| MPI | Merchant Plug-In |
| MPT | Mod.Perl.Test |