| Proximacreativ.fr | Gironde |
| Proxsys | Haut-Rhin |
| ProxyGen Informatique | Eure |
| Proxymis Multimédia | Nord |
| Prysm Software | Bouches-du-Rhône |
| Prysme | Gironde |
| PSI 2000 | Hauts-de-Seine |
| pub74.com | Haute-Savoie |
| Publidata | |
| Publiepress | Paris |
| Publish-IT | Loiret |
| Pubstack | |
| Puces Technologies Semiconducteurs | |
| Puissance 3 | Essonne |
| Pulsalys | Métropole de Lyon |
| Pulse Group | Paris |
| PulseLife | |
| Pumpup | Paris |
| Purchasely | |
| Pure Agency | Paris |
| Purse | |
| Push IT Up | Paris |
| PV Logiciels | Maine-et-Loire |
| Pygram | Loire-Atlantique |
| PYMAC | Bouches-du-Rhône |
| Pyrat.net | Dordogne |
| Pyréweb | Hautes-Pyrénées |
| Pyron.fr | Métropole de Lyon |
| Pythagore F.D. Paris | Paris |
| Pytheas | Bouches-du-Rhône |
| Pytheas | |
| Pythie | Hauts-de-Seine |
| Pyxis | Hérault |
| Pyxo S.A.S. | |
| Q3 Advocacy | |
| Qalyptus | |
| QantEv | |
| QAPA | |
| Qard | |
| Qare | |
| Qarnot Computing | |
| Qart | |
| QC Ware | Paris |
| Qlip | |
| Qobra | |
| Qobuz | |
| Qonto | |
| Qonto | |
| Qoodos | |
| QOS Telecom | Essonne |