| Date | Conference | Sponsorship deadline |
| 8-12 June 2026 | 3rd ESA / NASA International Conference on Advanced Manufacturing – Netherlands | Closed |
| 9 – 12 June 2026 | Space Climate 10 – Finland | Closed |
| 15 – 19 June 2026 | International Symposium on Dynamic Response and Failure of Composite Materials & International Workshop AI-driven Approaches for Space Applications – Italy | Closed |
| 23 – 25 June 2026 | 3rd ESA Reliability Availability Maintainability and Safely Conference – Netherlands | Closed |
| 23 – 25 June 2026 | Φnnovation Summit* – Italy | Closed |
| 29 June – 03 July 2026 | Clean Space Days 2026* – Netherlands | Closed |
| 06 – 10 July 2026 | 15th Asteroid Comets Meteors* – Poland | Closed |
| 10 – 14 August 2026 | Solar Magnetohydrodynamics Conference – Spain | Closed |
| 01 – 02 September 2026 | Space For Inspiration. Annual Conference on Commercial Space Exploration 2026 – Denmark | Not open yet |
| 28 September – 02 October 2026 | ESA International Conference on Guidance, Navigation & Control Systems and International Conference on Astrodynamics Tools and Techniques – Spain | Closed |
| 28 September – 02 October 2026 | RADiation and its Effects on Components and Systems Conference* – Czech Republic | Closed |
| 30 September – 02 October 2026 | 39th IEEE International Symposium on Defect and Fault Tolerance in VLSI and Nanotechnology Systems – Italy | Not open yet |
| 01 – 02 October 2026 | ESA/CNES Space Cost Engineering Conference 2026 – Netherlands | 05 July |
| 06 – 08 October 2026 | European Space Thermal Engineering Workshop – Netherlands | 1 September |
| 05 – 09 October 2026 | 14th European Space Power Conference* – Portugal | 31 May |
| 13 – 16 October 2026 | 6th Space Passive Component Days – Netherlands | Closed |
| 19 – 23 October 2026 | Artificial Intelligence in and for Space* – Netherlands | 31 May |
| 2 – 6 November 2026 | European Space Weather Week (ESWW) – Italy | 15 July |