| 1000045090 | Transcality | CH-Switzerland | Company | No | Alumnus | ESA BIC Switzerland | |
| 1000034868 | TravelAi | GB-United Kingdom | Company | No | Alumnus | ESA BIC UK | |
| 1000050002 | Treeconomy Ltd | GB-United Kingdom | Company | Yes | Alumnus | ESA BIC UK | |
| 1000046721 | Trimsignal | GR-Greece | Company | Yes | Alumnus | ESA BIC Greece | |
| 1000047525 | TUMI ROBOTICS SPACE | LU-Luxembourg | Company | Yes | Incubatee | ESRIC Start-up Support Programme | |
| 1000048536 | TurfSat s.r.o. | CZ-Czech Republic | Company | No | Incubatee | ESA BIC Czech Republic | |
| 1000043062 | Turtle Island Space B.V. | NL-Netherlands | Company | No | Alumnus | ESA BIC Noordwijk | |
| 1000042621 | TwingTec | CH-Switzerland | Company | No | Alumnus | ESA BIC Switzerland | |
| 1000049078 | Twinverse | FI-Finland | Company | Yes | Incubatee | ESA BIC Finland | |
| 1000041027 | Tycho Space Technologies AS | NO-Norway | Company | Yes | Alumnus | ESA BIC Norway | |
| 1000043212 | UAB Biordico | LT-Lithuania | Company | Yes | Incubatee | ESA BIC Lithuania | |
| 1000040692 | UAB Delta Biosciences | LT-Lithuania | Company | Yes | Alumnus | ESA BIC Lithuania | |
| 1000036640 | Uav Autosystems Hovering Solutions España SL. | ES-Spain | Company | No | Alumnus | ESA BIC Madrid Region | |
| 1000040646 | ubicube GmbH | AT-Austria | Company | No | Alumnus | ESA BIC Austria | |
| 1000043502 | UDX s.r.o. | CZ-Czech Republic | Company | No | Alumnus | ESA BIC Czech Republic | |
| 1000036466 | Ultima Forma Ltd | GB-United Kingdom | Company | No | Alumnus | ESA BIC UK | |
| 1000045024 | umbrella space science ltd | GB-United Kingdom | Company | Yes | Alumnus | ESA BIC UK | |
| 1000037958 | Uneeqly s.r.o. | CZ-Czech Republic | Company | No | Alumnus | ESA BIC Czech Republic | |
| 1000024199 | UNIBAP AB | SE-Sweden | Company | Yes | Alumnus | ESA BIC Sweden | |
| 1000028140 | Unisphere GmbH | DE-Germany | Company | Yes | Alumnus | ESA BIC Bavaria | |