| Nuclino | |
| Nuco.cloud | Bavaria |
| Nui Care GmbH | |
| Nuitka | |
| null2 GmbH | Berlin |
| Nullacht15 GmbH | Baden-Württemberg |
| Nullzeit | Baden-Württemberg |
| Numa Group GmbH | |
| Numaferm GmbH | |
| Numares AG | |
| Numax GmbH | Lower Saxony |
| Numbat GmbH | |
| NUMCAD GmbH | |
| numero2.de | Rhineland-Palatinate |
| Nuri GmbH | |
| Nürnberg SEO Experte | |
| Nurogames GmbH | |
| Nuromedia GmbH | North Rhine-Westphalia |
| NuS Computer-Netze und EDV-Systeme GmbH | Lower Saxony |
| NUTSEO GmbH | |
| Nuventura GmbH | |
| NUVISAN GmbH | |
| Nuvo | |
| Nuwacom GmbH | |
| nvii-media GmbH | Saxony-Anhalt |
| NVision Imaging Technologies GmbH | |
| NX Digital GmbH | |
| NX-Food GmbH | North Rhine-Westphalia |
| NXI GmbH & Co. KG | |
| NXT Spectra | |
| NXT You GmbH | |
| Nynex Satellite OHG | |
| Nyra Health GmbH | |
| Nyris GmbH | |
| nzt.ventures GmbH | Bavaria |
| O & R Corporate Finance Beratungsgesellschaft mbH | Bavaria |
| O&O Services GmbH | Berlin |
| O&O Software GmbH | Berlin |
| O-Punkt CAD GmbH | Bavaria |
| O.S. Computerservice | Brandenburg |
| Oakfin Partners GmbH | |
| OakLabs GmbH | |
| OakLabs Scientific GmbH | |
| Obeco GmbH | Rhineland-Palatinate |
| Obengelb GmbH | North Rhine-Westphalia |
| Oberdieck Online GmbH | North Rhine-Westphalia |
| Oberlausitzer Elektro-Schaltgeräte GmbH | Saxony |
| Obermeier Software | North Rhine-Westphalia |
| Obermeit GmbH | Schleswig-Holstein |
| Obermeyer Planen + Beraten GmbH | Bavaria |