| Peterson's, LLC | |
| PeteSoft, LLC | Utah |
| PetHub, Inc. | |
| Petit Enterprises | |
| PetPocketbook, Inc. | |
| Petra Capital Partners, LLC | Tennessee |
| Petra Technologies | Oregon |
| Petrabytes Corporation | Texas |
| Petri | Massachusetts |
| Petri Media, LLC | |
| Petro Data, Inc. | |
| Petroglyph | Nevada |
| Petroleum RX | Arizona |
| Petron Automation, Inc. | Connecticut |
| Petronella Technology Group, Inc. | North Carolina |
| Petros Pharmaceuticals | |
| Petrosoft | Pennsylvania |
| Petroway, Inc. | California |
| petroWEB | Colorado |
| Petry Design | |
| PetSitConnect.com, LLC | Texas |
| Petuum, Inc. | Pennsylvania |
| PetWebDesigns.com | Washington |
| Pew Research Center - Internet & Technology | District of Columbia |
| Pexeso, Inc. | California |
| Peytant Solutions, Inc. | |
| PFA, Inc. | Wisconsin |
| Pfeiffer University | North Carolina |
| Pfizer CentreOne | New York |
| Pfizer, Inc. | New York |
| PFM Medical, Inc. | |
| Pfsense Firewall | Texas |
| PFSweb, Inc. | Texas |
| PG Computers | California |
| PG Technology, Inc. | Texas |
| pgEdge, Inc. | Virginia |
| PGH Lab | Pennsylvania |
| PGH VC Association | Pennsylvania |
| PGN Agency | |
| PH3 | Florida |
| Phacility, Inc. | |
| PhageNova Bio, Inc. | New Jersey |
| PhagePro, Inc. | |
| PhageTech, Inc. | California |
| Phaidra, Inc. | Washington |
| Phalanx | |
| Phanes Biotech | |
| Phanes Therapeutics, Inc. | |
| Phantom | |
| Phantom Auto | California |