| Date | Conference | Sponsorship deadline |
| 06 – 10 July 2026 | Asteroid Comets Meteors* | Closed |
| 23 – 25 June 2026 | Φnnovation Summit* | 30 April |
| 28 September – 02 October 2026 | ESA International Conference on Guidance, Navigation & Control Systems and International Conference on Astrodynamics Tools and Techniques | Closed |
| 15 – 19 June 2026 | International Symposium on Dynamic Response and Failure of Composite Materials & International Workshop AI-driven Approaches for Space Applications | 30 April |
| 13 – 16 October 2026 | 6th Space Passive Component Days | Closed |
| 29 June – 03 July 2026 | Clean Space Days 2026* | 01 April |
| 23 – 25 June 2026 | 3rd ESA Reliability Availability Maintainability and Safely Conference | 15 April |
| 28 September – 02 October 2026 | RADiation and its Effects on Components and Systems Conference* | 15 May |
| 05 – 09 October 2026 | European Space Power Conference* | 31 May |
| 19 – 23 October 2026 | Artificial Intelligence in and for Space* | 31 May |
| 18 – 21 May 2026 | 10th Edition of the International Space Propulsion Conference | Not open yet |
| 10 – 14 August 2026 | Solar Magnetohydrodynamics Conference | Not open yet |
| 01 – 02 October 2026 | ESA/CNES Space Cost Engineering Conference 2026 | 05 July |