| MTI | Kiev |
| MUK Cloud Solutions Kiev | |
| Multi-programming Solutions Ltd | Kharkiv |
| Muraha | Kharkiv |
| MVO satellite | Dnipropetrovsk |
| MWDN Ltd | Kharkiv |
| MyCredit | |
| Myname.com.ua | Kiev |
| MyTV.global | |
| N-iX | Lviv |
| N-line | Kiev |
| Names.com.ua | Kiev |
| National Taras Shevchenko University - Faculty of Cybernetics | Kiev |
| National University of Life and Enrironmental Sciences of Ukraine | Kiev |
| Natively | |
| Navi | Kiev |
| Navitel | Kiev |
| NeoCom | Cherkasy |
| NET Technology Center WEB100 | Kiev |
| NetCraft Computers Ltd | Kiev |
| NetHolding | Dnipropetrovsk |
| NetHunt | |
| Netstat Space | Kirovohrad |
| Network Software Solutions | Kiev |
| NeuString | Dnipropetrovsk |
| New Line Technologies | |
| New Normal | |
| New Vision, LLC | |
| Newsoft | |
| NewtonIdeas | Kiev |
| NIS | Kiev |
| Nix Solutions Ltd | Kiev |
| NodeArt Soft Ukraine, LLC | Kiev |
| Nolt Technologies, LLC | |
| Not The Same | |
| Nullgravity | Kiev |
| O3 | Kiev |
| Octa Energy | |
| Odessa National University of Economics | |
| Okna.com.ua | Kiev |
| OmegaTelecom | Kiev |
| One Logic Soft | |
| Onix | Kiev |
| Online Documentation Server | Kiev |
| OntargIT LLC | Kiev |
| OOO "BSCom" | Odessa |
| OOO "ПростоХостинг" | Kiev |
| Opensource.com.ua | Kiev |
| Osavul | |
| osCommerce Manager | |