| 1000049786 | HVsys Testing UG (haftungsbeschränkt) | DE-Germany | Company | No | Incubatee | ESA BIC Hessen | |
| 1000043405 | Hybrid Propulsion for Space | FR-France | Company | No | Alumnus | ESA BIC Sud France | |
| 1000042879 | Hybrogines | FR-France | Company | No | Alumnus | ESA BIC Nord France | |
| 1000040850 | Hydromars AB | SE-Sweden | Company | No | Alumnus | ESA BIC Sweden | |
| 1000051661 | Hyperplan | FR-France | Company | No | Alumnus | ESA BIC Sud France | |
| 1000045426 | Hypersonica GmbH | DE-Germany | Company | No | Alumnus | ESA BIC Bavaria | |
| 1000051320 | Hyposto Energy GmbH | DE-Germany | Company | No | Incubatee | ESA BIC Hessen | |
| 1000034639 | Hytech-imaging | FR-France | Company | No | Alumnus | ESA BIC Nord France | |
| 1000051082 | Hytrade Oy | FI-Finland | Company | No | Incubatee | ESA BIC Finland | |
| 1000035649 | I Clean My Sea | FR-France | Company | No | Alumnus | ESA BIC Sud France | |
| 1000050591 | IASONAS-ACHILLEAS MEZILIS SKYE SINGLE MEMBER PRIVATE COMPANY | GR-Greece | Company | No | Incubatee | ESA BIC Greece | |
| 1000030749 | IceKing GmbH | AT-Austria | Company | No | Alumnus | ESA BIC Austria | |
| 1000033048 | I-CONIC Vision AB | SE-Sweden | Company | No | Alumnus | ESA BIC Sweden | |
| 1000033314 | IDAERO SOLUTIONS SL | ES-Spain | Company | No | Alumnus | ESA BIC Madrid Region | |
| 1000032151 | Ienai SPACE SL | ES-Spain | Company | No | Alumnus | ESA BIC Madrid Region | |
| 1000047448 | immersea srl | IT-Italy | Company | No | Alumnus | ESA BIC Lazio | |
| 1000031609 | In Quattro | IT-Italy | Company | No | Alumnus | ESA BIC Lazio | |
| 1000039204 | Inergio technologies SA | CH-Switzerland | Company | No | Alumnus | ESA BIC Switzerland | |
| 1000043373 | Inflabi GmbH | DE-Germany | Company | No | Alumnus | ESA BIC Hessen | |
| 1000045043 | InnoPilot ApS | DK-Denmark | Company | No | Alumnus | ESA BIC Denmark | |