| 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 | |
| 1000039556 | HYVIATE GmbH | DE-Germany | Company | Yes | Alumnus | ESA BIC Bavaria | |
| 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 | |
| 1000046553 | ICEE.Space Czechia s.r.o. | CZ-Czech Republic | Company | Yes | Alumnus | ESA BIC Czech Republic | |
| 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 | |
| 1000047997 | Iloomina AB | SE-Sweden | Company | Yes | Incubatee | ESA BIC Sweden | |
| 1000044643 | Ilu Space Oy | FI-Finland | Company | Yes | Alumnus | ESA BIC Finland | |
| 1000045295 | IMENSUS UG (haftungsbeschränkt) | DE-Germany | Company | Yes | Alumnus | ESA BIC Baden-Württemberg | |
| 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 | |
| 1000050984 | Infinect Limited | GB-United Kingdom | Company | Yes | Incubatee | ESA BIC UK | |
| 1000047509 | InfiniNode Technologies AB | SE-Sweden | Company | Yes | Alumnus | ESA BIC Sweden | |
| 1000043373 | Inflabi GmbH | DE-Germany | Company | No | Alumnus | ESA BIC Hessen | |