| Oxalys | Hauts-de-Seine |
| Oxatis | Bouches-du-Rhône |
| Oxeltis | |
| OXER Technologies | Bouches-du-Rhône |
| Oxeva | |
| Oxiane | Hauts-de-Seine |
| Oxicat | Val-de-Marne |
| OxyCrea | Haute-Garonne |
| Oxyd | Hauts-de-Seine |
| Oxygeno | |
| Oxylog | |
| Oxymel | Yvelines |
| OXYMIUM S.A.R.L. | Paris |
| Oxymum | Yvelines |
| Oxynel | Hérault |
| Oyez | Paris |
| OZ Biosciences | |
| Ozanges | Charente |
| Ozeam | |
| Ozis informatique et internet | Loir-et-Cher |
| P & I - Echophone | Haute-Garonne |
| P.Factory | Bouches-du-Rhône |
| PAARLY | |
| PAC Informatique | Marne |
| Pac.Jobs | Bouches-du-Rhône |
| Pacte Novation | Hauts-de-Seine |
| Padoa | |
| Page Up | Côte-d'Or |
| PagesIMMOweb | Nord |
| PagesJaunes | |
| Palam S.A.R.L. | Hauts-de-Seine |
| Palette S.A.S. | |
| Palico | Paris |
| Palmsquare | |
| PANDA Guide | |
| PandaLab | |
| PandaScore | |
| Pangloss Télécom | |
| Pango | |
| PannTheraPi | |
| Panzani | |
| Paomedia S.A.R.L. | Calvados |
| Papaya Consulting | |
| Papernest | |
| Papier Pixel | Deux-Sèvres |
| Paradisia | Val-d'Oise |
| Paramed.app | |
| Parc d’Innovation de Strasbourg | |
| Parcoor | |
| Parcus Digital Solutions | |