| 1000044522 | QASE Tech ApS | DK-Denmark | Company | No | Alumnus | ESA BIC Denmark | |
| 1000035245 | qbound | DE-Germany | Company | No | Alumnus | ESA BIC Bavaria | |
| 1000045846 | Qoro Quantum UG (haftungsbeschränkt) | DE-Germany | Company | No | Incubatee | ESA BIC Bavaria | |
| 1000040920 | QuantumDiamonds GmbH | DE-Germany | Company | No | Alumnus | ESA BIC Bavaria | |
| 1000046773 | QuantumSpaceAI Oy | FI-Finland | Company | No | Incubatee | ESA BIC Finland | |
| 1000045023 | QuiMo GmbH | DE-Germany | Company | No | Alumnus | ESA BIC Baden-Württemberg | |
| 1000035074 | Raptor Aerospace Limited | GB-United Kingdom | Company | No | Alumnus | ESA BIC UK | |
| 1000041224 | REA Srl | IT-Italy | Company | No | Alumnus | ESA BIC Turin | |
| 1000046075 | Redar PC | GR-Greece | Company | No | Incubatee | ESA BIC Greece | |
| 1000043436 | Reef Support B.V. | NL-Netherlands | Company | No | Alumnus | ESA BIC Noordwijk | |
| 1000033378 | REFARMO GmbH | AT-Austria | Company | No | Alumnus | ESA BIC Austria | |
| 1000042750 | reLi Energy | DE-Germany | Company | No | Alumnus | ESA BIC Hessen | |
| 1000044910 | Remea GmbH | AT-Austria | Company | No | Incubatee | ESA BIC Austria | |
| 1000037593 | Remos Space Systems AB | SE-Sweden | Company | No | Alumnus | ESA BIC Sweden | |
| 1000046938 | Resmonics AG | CH-Switzerland | Company | No | Incubatee | ESA BIC Switzerland | |
| 1000033344 | Responsive Access Limited | GB-United Kingdom | Company | No | Alumnus | ESA BIC UK | |
| 1000032263 | Rigi Technologies | CH-Switzerland | Company | No | Alumnus | ESA BIC Switzerland | |
| 1000044844 | Riverkin GmbH | CH-Switzerland | Company | No | Incubatee | ESA BIC Switzerland | |
| 1000041983 | Robco GmbH | DE-Germany | Company | No | Alumnus | ESA BIC Bavaria | |
| 1000026606 | Robotic Eyes GmbH & Co KG | AT-Austria | Company | No | Alumnus | ESA BIC Austria | |