| PlannlyOther | Other | San Francisco, United States | — | plannlyhealth.com |
| PlatedOther | Other | New York City, United States | Nick Taranto | plated.com |
| PlatogoConsumer | Consumer | — | — | platogo.com |
| Play HealthHealthcare | Healthcare | Boulder, United States | — | playhealth.com |
| Playabl.aiConsumer | Consumer | San Francisco, United States | Hamza Al-Ali | playabl.ai |
| PlayCanvasConsumer | Consumer | London, United Kingdom | Will Eastcott | playcanvas.com |
| PlayedFintech | Fintech | London, United Kingdom | — | played.co |
| Player's HealthFintech | Fintech | Minneapolis, United States | Tyrre Burks | playershealth.com |
| PlayerDataOther | Other | Edinburgh, United Kingdom | Fraser Robertson | playerdata.co.uk |
| PlaygentHealthcare | Healthcare | San Francisco, United States | | useplaygent.com |
| PlayVisionB2B | B2B | San Francisco, United States | | withplayvision.ai |
| PleoFintech | Fintech | — | Jeppe Rindom | pleo.io |
| PleomB2B | B2B | — | Royce Arockiasamy | pleom.com |
| Plexis AIB2B | B2B | Dover, United States | — | plexis.ai |
| PlexusOther | Other | Omaha, United States | — | plexusaero.space |
| PlumeryFintech | Fintech | — | Ben Goldin | plumery.com |
| PlutoOther | Other | Boston, United States | — | heypluto.com |
| Pluto HealthHealthcare | Healthcare | United States | — | pluto.health |
| PM2Consumer | Consumer | New York City, United States | Unitech Alexandre | pm2.io |
| PocketConsumer | Consumer | — | | heypocket.com |
| Pod PeopleB2B | B2B | Los Angeles, United States | Rachael King | podpeople.com |
| PointyConsumer | Consumer | — | Mark Cummins | pointy.com |
| PointzOther | Other | Providence, United States | — | bikepointz.com |
| PollenB2B | B2B | — | | pollen.cx |
| PollenFintech | Fintech | — | — | pollentechnologies.com |
| PollinateB2B | B2B | — | | pollinate.tech |
| PollyB2B | B2B | Issaquah, United States | Bilal Aijazi | polly.ai |
| PolygonOther | Other | Berkeley, United States | — | hellopolygon.com |
| PolymathB2B | B2B | — | | polymathlabs.ai |
| PolymorphConsumer | Consumer | San Francisco, United States | — | |
| PolymorphB2B | B2B | — | | usepolymorph.com |
| PolyXLabsIndustrials | Industrials | Budapest, Hungary | — | poliloop.com |
| PopComOther | Other | Columbus, United States | Dawn Dickson | popcom.shop |
| PoppB2B | B2B | London, United Kingdom | — | joinpopp.com |
| PoppinsOther | Other | Paris, France | — | poppins.io |
| PoppyOther | Other | Washington, United States | — | poppyflowers.com |
| PopsinkB2B | B2B | — | — | popsink.com |
| Portabl.coFintech | Fintech | London, United Kingdom | Darko Tomic | portabl.co |
| PortalOneConsumer | Consumer | — | Stig Olav Kasin | portalone.com |
| PortersFintech | Fintech | — | — | withporters.com |
| PortFFintech | Fintech | London, United Kingdom | — | portf.io |
| Post-QuantumFintech | Fintech | London, United Kingdom | Andersen Cheng | post-quantum.com |
| PowerBox TechnologyIndustrials | Industrials | Champaign, United States | — | powerboxtech.com |
| PowerMarketOther | Other | Oxford, United Kingdom | — | powermarket.ai |
| PowerMatrixIndustrials | Industrials | Cambridge, United Kingdom | | pwrmatrix.com |
| PowernautIndustrials | Industrials | — | — | powernaut.io |
| PowerTechsEducation | Education | Wilmington, United States | — | powertechs.us |
| PowertrustIndustrials | Industrials | Vancouver, Canada | — | powertrust.com |
| Pramatra SpaceB2B | B2B | New York City, United States | — | pramatra.space |
| PranaHealthcare | Healthcare | — | | pranadoc.com |