| PackworksFintech | Fintech | Makati, Philippines | — | thepackworks.com |
| PadSplitOther | Other | Atlanta, United States | Atticus LeBlanc | padsplit.com |
| PaidFintech | Fintech | Darlington, United Kingdom | — | paid.co.uk |
| PaladinConsumer | Consumer | New York City, United States | Alison Rooney | joinpaladin.com |
| PanaConsumer | Consumer | Denver, United States | Devon Tivona | pana.com |
| PandiumOther | Other | New York City, United States | Cristina Flaschen | pandium.com |
| PanOpenEducation | Education | New York City, United States | Dhawal Shah | panopen.com |
| PaperstackOther | Other | Toronto, Canada | — | paperstack.ca |
| PaprB2B | B2B | Dublin, United States | Arvid Lunnemark | papr.ai |
| ParabolB2B | B2B | Brooklyn, United States | Jordan Husney | parabol.co |
| ParalogConsumer | Consumer | Montréal, Canada | — | paralog.ai |
| Parasol PlatformsB2B | B2B | City of Newark, United States | — | parasolplatforms.com |
| Parlay FinanceB2B | B2B | Alexandria, United States | — | parlay.finance |
| ParlevelFintech | Fintech | San Antonio, United States | Ryan Wilcox | parlevelsystems.com |
| ParsempoOther | Other | New York City, United States | — | parsempo.com |
| ParsimoniB2B | B2B | Pau, France | — | parsimoni.co |
| PartsimonyOther | Other | Brooklyn, United States | — | partsimony.com |
| PartySlateOther | Other | Chicago, United States | Julie Roth Novack | partyslate.com |
| Pass It DownFintech | Fintech | Chattanooga, United States | Nick Hasty | passitdown.com |
| PathgatherB2B | B2B | Sacramento, United States | Eric Encoding | pathgather.com |
| PathSpotIndustrials | Industrials | New York City, United States | Christine Schindler | pathspot.com |
| Patient IOConsumer | Consumer | Austin, United States | — | patientio.com |
| PayAngelFintech | Fintech | Dartford, United Kingdom | Nana Yaw Otchere | payangel.com |
| PeakMetricsB2B | B2B | Los Angeles, United States | Nick Ronnei | peakmetrics.com |
| Pear SuiteHealthcare | Healthcare | Seattle, United States | Nikki Lamba | pearsuite.com |
| Peas FinancialB2B | B2B | Cave Springs, United States | — | peas.money |
| Peeq IndustriesOther | Other | Omaha, United States | — | peeqpro.com |
| Peer RoboticsB2B | B2B | New Haven, United States | Sarthak Srinivas | peerrobotics.ai |
| PeerbyIndustrials | Industrials | Amsterdam, Netherlands | Daan Weddepohl | peerby.com |
| Pelikan MobilityOther | Other | Paris, France | — | pelikan-mobility.com |
| Penny FinanceFintech | Fintech | Boston, United States | Crissi Cole | penny-finance.com |
| PenPal SchoolsEducation | Education | Austin, United States | Aaron Feuer | penpalschools.com |
| PerchOther | Other | Cambridge, United States | — | perch.fit |
| PercyOther | Other | Washington, United States | — | percysleep.com |
| PerformVuOther | Other | Brooklyn, United States | — | watchlucid.com |
| PeripheryOther | Other | London, United Kingdom | — | periphery.security |
| PermitechIndustrials | Industrials | Dammam, Saudi Arabia | — | permi.tech |
| PersoniFiOther | Other | Santa Monica, United States | — | joinpersonifi.com |
| Petra PowerIndustrials | Industrials | Solon, United States | — | petrapower.com |
| PezzoB2B | B2B | San Francisco, United States | Bat-El Uzrad | pezzo.ai |
| PhalanxB2B | B2B | Arlington, United States | — | phalanx.io |
| PharmaBusinessReviewB2B | B2B | London, United Kingdom | — | pbrinsight.com |
| Phoenix TailingsIndustrials | Industrials | Boston, United States | Nick Myers | phoenixtailings.com |
| PhoneWagonOther | Other | New York City, United States | Ryan Shank | phonewagon.com |
| PhoodFintech | Fintech | Boulder, United States | — | phood.co |
| Phood SolutionsB2B | B2B | Boston, United States | — | phoodsolutions.com |
| PhotocertOther | Other | London, United Kingdom | — | photocert.co.uk |
| Piction HealthB2B | B2B | Cambridge, United States | — | lumindx.com |
| Pierce AerospaceOther | Other | Fishers, United States | James Pierce | pierceaerospace.net |
| PierSight SpaceOther | Other | Ahmedabad, India | Vaibhav Sinha | piersight.space |