| Panasonic Electric Works Schweiz AG | Zug |
| Paper.li | Vaud |
| Parallels International GmbH | Schaffhausen |
| Parenti Design | Geneva |
| Paro AG | Solothurn |
| Partech AG | Schwyz |
| PAS Solutions GmbH | Thurgau |
| Paul Büetiger AG | Solothurn |
| Paul Scherrer Institut | Aargau |
| Pax.World | |
| Payrexx AG | |
| PB&B S.A. | |
| PC AG IT-Services | St. Gallen |
| PC-Team | Zurich |
| pCloud AG | |
| PDF Tools | Zurich |
| Peach | Zurich |
| PeakData | |
| Peba AG | Thurgau |
| Peloi GmbH | Aargau |
| Pelt8 | |
| Pentag Informatik AG | Bern |
| Pentagon System S.à.r.l. | Neuchâtel |
| Peoplefone AG | Zurich |
| pEp Security S.A. | Zurich |
| Pepnet | Zurich |
| Perey Research & Consulting | |
| Pericom AG | Schaffhausen |
| PeriVision S.A. | |
| Perldev | Jura |
| Permission.io | Zug |
| Perrier Machines de Bureau | Vaud |
| Perseo Pharma AG | |
| PersonalCare Systems | |
| Perspectives Software Solutions GmbH | Zurich |
| Pexapark | |
| Pexys Group | Zurich |
| Phargentis S.A. | |
| PharmaBiome AG | |
| Pharvaris | |
| Phillip vs. Eichinger | Lucerne |
| Philochem AG | |
| PhoneWorld Telecommunications | Geneva |
| Piavita AG | |
| Picnic Terminal | Zurich |
| Picterra | |
| Piece International S.A. | |
| Pipra AG | |
| PIT Solutions AG | Zurich |
| Pitcher AG | |