| 1000032989 | Ommatidia Lidar S.L. | ES-Spain | Company | Yes | Alumnus | ESA BIC Madrid Region | |
| 1000027054 | OPT ALM | FR-France | Company | Yes | Alumnus | ESA BIC Sud France | |
| 1000030217 | OPT/NET BV | NL-Netherlands | Company | Yes | Alumnus | ESA BIC Noordwijk | |
| 1000044838 | Optocycle GmbH | DE-Germany | Company | No | Alumnus | ESA BIC Baden-Württemberg | |
| 1000029654 | Orbital Astronautics | GB-United Kingdom | Company | Yes | Alumnus | ESA BIC UK | |
| 1000030848 | ORBITAL CARGO DRONE LTD | GB-United Kingdom | Company | No | Alumnus | ESA BIC UK | |
| 1000013313 | ORBITAL EYE BV | NL-Netherlands | Company | No | Alumnus | ESA BIC Noordwijk | |
| 1000042990 | Orbital Matter Poland Sp. z o.o. | PL-Poland | Company | Yes | Alumnus | ESA BIC Poland | |
| 1000040177 | Orbital Outpost Italy S.R.L. | IT-Italy | Company | No | Alumnus | ESA BIC Turin | |
| 1000029399 | Orbital Witness Limited | GB-United Kingdom | Company | No | Alumnus | ESA BIC UK | |
| 1000031454 | OroraTech GmbH | DE-Germany | Company | Yes | Alumnus | ESA BIC Bavaria | |
| 1000042598 | OSMIUM ITALY S.R.L. | IT-Italy | Company | Yes | Alumnus | ESA BIC Turin | |
| 1000036590 | OUR WATCH LEADS - OWL, LDA | PT-Portugal | Company | No | Alumnus | ESA BIC Portugal | |
| 1000031502 | OXFORD EARTH OBSERVATION LIMITED | GB-United Kingdom | Company | No | Alumnus | ESA BIC UK | |
| 1000040699 | OXO Earth Technologies UG | DE-Germany | Company | Yes | Alumnus | ESA BIC Bavaria | |
| 1000031523 | Panda Insight UG (haftungsbeschrankt) | DE-Germany | Company | No | Alumnus | ESA BIC Hessen | |
| 1000032578 | PandionAI AB | SE-Sweden | Company | Yes | Alumnus | ESA BIC Sweden | |
| 1000030875 | Pangea Aerospace S.L. | ES-Spain | Company | Yes | Alumnus | ESA BIC Sud France | |
| 1000037326 | Panopterra UG (haftungsbeschraenkt) | DE-Germany | Company | Yes | Alumnus | ESA BIC Hessen | |
| 1000043579 | ParaLoon BV | BE-Belgium | Company | Yes | Alumnus | ESA BIC Belgium | |