| MIP Sp. z o.o. | Masovian |
| Miquido Sp. z o.o. Sp. k. | Lesser Poland |
| Miramar Software | Pomeranian |
| Mirit.pl | |
| MiroMind SEO Agency | |
| Mirumee Software Sp. z o.o. Sp. k. | |
| MixedMedia | Pomeranian |
| MKI Sp. z o.o. | Lesser Poland |
| MKPOL | Greater Poland |
| ML System S.A. | |
| Mobee Dick | |
| Mobicom Sp. z o.o. | West Pomeranian |
| Mobile Madness Sp. z o.o. | |
| Mobile Madness Sp. z o.o. | |
| Mobile Reality | |
| Mobile Reality Sp. z o.o. | |
| Mobiler | |
| Mobilesoft | |
| Mobilis Robotics Sp. z o.o. | |
| Mobiltek | |
| Mobitouch | |
| Mobo Studio | |
| Modern Solution | |
| Modsen | |
| Modue | |
| Modulus Sp. z o.o. | |
| mohi.to | Lower Silesian |
| Mojosoft | Greater Poland |
| Mojosoft Software | |
| Molecule One Sp. z o.o. | |
| Molecure | |
| Momentum | |
| Monolit IT Sp. z o.o. | |
| Monterail.com Sp. z o.o. | Lower Silesian |
| Moobite S.A. | |
| Mood Up Team | Greater Poland |
| Moondo Sp. z o.o. | |
| MooseFS | Masovian |
| MORAI Sp. z o.o. | |
| More Growth Sp. z o.o. | |
| more7 Polska Sp. z o.o. | Masovian |
| MoserNet | Łódź |
| Mospan | Masovian |
| MOTIFE | Lesser Poland |
| MotivLab | |
| Mouton.pl | Masovian |
| Move Closer Sp. z o.o. | |
| move2edge Sp. z o.o. | |
| Movens Capital | |
| Movie Games S.A. | |