| Poznański Park Naukowo-Technologiczny | Greater Poland |
| Poznańskie Centrum Superkomputerowo-Sieciowe | Greater Poland |
| Poznańskie Warsztaty Telekomunikacujne | Greater Poland |
| Pozycjoner | Lower Silesian |
| PPHU Dombit | Silesian |
| PQ Studio | |
| PR Solutions | |
| Pracodawcy Rzeczpospolitej Polskiej | |
| Pracuj Ventures | |
| PragmaGO.tech Sp. z o.o. | |
| Pragmatic Coders | |
| Prekursor NT Sp.z o.o. | Lesser Poland |
| premium.pl Sp. z o.o. | |
| Preskom | Lublin |
| Pressmo | Pomeranian |
| PressPad Sp. z o.o. | |
| PriceLab | |
| Prime Bit Games S.A. | |
| Princity | |
| Printor Sp. z o.o. | Łódź |
| Prismake | |
| Pro Automatic Sp. z o.o. | |
| Pro Web Software | |
| Pro-ANS | Lower Silesian |
| Pro-position | Masovian |
| PRO-STER Sp. J. | Łódź |
| Probe Sp. z o.o. | |
| Procad S.A. | Pomeranian |
| Procom System S.A. | |
| ProData | |
| PRODO Agencja Reklamowo Informatyczna | Greater Poland |
| PRODromus.pl | |
| Producer | Świętokrzyskie |
| Proexe | Masovian |
| Proexe Sp. z o.o. | |
| PROF computer | Silesian |
| Profabrica | Masovian |
| Proferis | Subcarpathian |
| Profesjonalni | Kuyavian-Pomeranian |
| Proffnet Sp. z o.o. | Silesian |
| Profi-Data Sp. z o.o. | West Pomeranian |
| Profil Software Sp. z o.o. | |
| ProfiPIEK | Masovian |
| Profitroom Sp. z o.o. | Greater Poland |
| ProgresNet | Masovian |
| Progress Automatyka Sp. z.o.o. | |
| Proidea | |
| Project: People Poland Sp. z o.o. | |
| Projekt Studio | Lower Silesian |
| Prolan | Silesian |