| 1000029389 | Intelligence on Wheels (IoW) GmbH | DE-Germany | Company | No | Alumnus | ESA BIC Bavaria | |
| 1000045638 | Intellmaps | CZ-Czech Republic | Company | No | Alumnus | ESA BIC Czech Republic | |
| 1000049955 | IntuitivAnalytix GmbH | DE-Germany | Company | No | Incubatee | ESA BIC Hessen | |
| 1000033601 | INVOLI | CH-Switzerland | Company | No | Alumnus | ESA BIC Switzerland | |
| 1000050131 | Ionic Wind AG | CH-Switzerland | Company | No | Incubatee | ESA BIC Switzerland | |
| 1000042504 | iQrypto | BE-Belgium | Company | No | Alumnus | ESA BIC Belgium | |
| 1000035998 | IRsweep AG | CH-Switzerland | Company | No | Alumnus | ESA BIC Switzerland | |
| 1000041801 | IRUBIS GmbH | DE-Germany | Company | No | Alumnus | ESA BIC Bavaria | |
| 1000030449 | Isar Aerospace SE | DE-Germany | Company | No | Alumnus | ESA BIC Bavaria | |
| 1000044629 | IVAQ Technologies S.L. | ES-Spain | Company | No | Alumnus | ESA BIC Madrid Region | |
| 1000046511 | JenAscent GmbH | AT-Austria | Company | No | Alumnus | ESA BIC Austria | |
| 1000048758 | Journey Protector (UK) Limited | GB-United Kingdom | Company | No | Alumnus | ESA BIC UK | |
| 1000030393 | Joysys GmbH | AT-Austria | Company | No | Alumnus | ESA BIC Austria | |
| 1000036431 | JupiterDynamic Atividades de Engenharia e Tecnicas Afins LDA | PT-Portugal | Company | No | Alumnus | ESA BIC Portugal | |
| 1000040366 | KATKORIA DEEPAK - LOGICDEV | AT-Austria | Company | No | Alumnus | ESA BIC Austria | |
| 1000039573 | Kido Dynamics SA | CH-Switzerland | Company | No | Alumnus | ESA BIC Switzerland | |
| 1000032428 | Kinetikos | PT-Portugal | Company | No | Alumnus | ESA BIC Portugal | |
| 1000030954 | Kinfinity UG (haftungsbeschränkt) | DE-Germany | Company | No | Alumnus | ESA BIC Bavaria | |
| 1000042844 | Klarifi ApS | DK-Denmark | Company | No | Alumnus | ESA BIC Denmark | |
| 1000046732 | KOKO Forest Oy | FI-Finland | Company | No | Alumnus | ESA BIC Finland | |