| QoveryConsumer | Consumer | Paris, France | Romaric Philogène | qovery.com |
| QualGentB2B | B2B | San Francisco, United States | | qualgent.ai |
| QualifiB2B | B2B | Noblesville, United States | Josh Tolan | qualifi.hr |
| qualiTEASB2B | B2B | St. John's, Canada | — | qualiteas.ca |
| QuanTemplateOther | Other | New York City, United States | Daniel Summerfield | quantemplate.com |
| QuantiveFintech | Fintech | Sofia, Bulgaria | Radoslav Georgiev | quantive.com |
| Quantum SystemsB2B | B2B | — | Florian Seibel | quantum-systems.com |
| Queen of RawOther | Other | New York City, United States | Stephanie Benedetto | aloqia.com |
| QuestDBB2B | B2B | — | Vlad Ilyushchenko | questdb.com |
| QuestomB2B | B2B | — | Abhimanyu Yadav | questom.ai |
| QuotissConsumer | Consumer | Warsaw, Poland | Dimitri Doronin | quotiss.com |
| QuSecureFintech | Fintech | San Mateo, United States | Skip Sanzeri | qusecure.com |
| R3 ScoreFintech | Fintech | Baltimore, United States | Laurin Leonard | r3score.com |
| Rad.Other | Other | New York City, United States | Gurbaksh Chahal | rad.live |
| RaddConsumer | Consumer | Tel Aviv, Israel | — | raddcontent.com |
| Radish HealthB2B | B2B | New York City, United States | Jacob Blackman | radish.health |
| Radix HealthHealthcare | Healthcare | United States | Kevin Foster | radixhealth.io |
| RaenestFintech | Fintech | Lagos, Nigeria | Dickson Nsofor | raenest.com |
| Rainbird TechnologiesB2B | B2B | Norwich, United Kingdom | Ben Taylor | rainbird.ai |
| Rainwalk TechnologyOther | Other | Columbia, United States | — | rainwalkpetinsurance.com |
| RainwayConsumer | Consumer | Seattle, United States | Andrew Sampson | rainway.io |
| RAKE MLOther | Other | Weston, United States | — | rakeml.com |
| RallyFintech | Fintech | Buffalo, United States | — | rallypwr.com |
| RallywareConsumer | Consumer | Mountain View, United States | Vladimir Blagojevic | rallyware.com |
| RamAInB2B | B2B | — | | ramain.ai |
| RampFintech | Fintech | — | Eric Glyman | ramp.com |
| RampFintech | Fintech | — | Szymon Sypniewicz | rampnetwork.com |
| RanaOther | Other | London, United Kingdom | — | ranaenergy.co |
| RangeForceB2B | B2B | White Plains, United States | Taavi Must | vequrity.com |
| RankuOther | Other | Seattle, United States | — | goranku.com |
| Rapid RMSFintech | Fintech | Chattanooga, United States | — | rapidrms.com |
| RasaB2B | B2B | San Francisco, United States | Alan Nichol | rasa.com |
| RasayelB2B | B2B | — | Omar Hamdan | rasayel.io |
| RatedPowerB2B | B2B | Madrid, Spain | Beatriz Lobón | ratedpower.com |
| Ravelin TechnologyB2B | B2B | London, United Kingdom | Martin Sweeney | ravelin.com |
| RayonB2B | B2B | — | — | rayon.design |
| ReacherB2B | B2B | San Francisco, United States | | reacherapp.com |
| RealBlocksFintech | Fintech | San Francisco, United States | Perrin Quarshie | realblocks.com |
| RealRootsConsumer | Consumer | San Francisco, United States | | therealroots.com |
| Realty MogulOther | Other | Los Angeles, United States | Jilliene Helman | realtymogul.com |
| RealworldOther | Other | New York City, United States | Genevieve Bellaire | realworldplaybook.com |
| RebulkB2B | B2B | Olathe, United States | | rebulk.com |
| RecurseB2B | B2B | — | — | recurse.ml |
| Redvest AppConsumer | Consumer | West Hollywood, United States | — | redvest.app |
| RedWing Aerospace LaboratoriesOther | Other | Bengaluru, India | — | redwinglabs.in |
| ReebeloConsumer | Consumer | Singapore | Yann Toutant | reebelo.com |
| ReedsyConsumer | Consumer | — | Emmanuel Nataf | reedsy.com |
| ReelData AIB2B | B2B | Halifax, Canada | Matthew Zimola | reeldata.ai |
| ReelerOther | Other | Stockholm, Sweden | — | reelertech.com |
| ReeliOther | Other | The Colony, United States | — | reeli.ai |