| Abdelhafiz, Mostafa | Poster social  Presenter | 
| Abdelkhalek, Ali | 05.a) Host rock characterization and long-term safety of deep geological repositories for high-level radioactive waste  Presenter | 
| Achterberg, Inke | 14.b) How can research data infrastructures meet today’s and future needs of the geosciences? | 
| Aehnelt, Michaela | 02.c) Sedimentary basins across time: exploring sedimentary strata and their depositional environments  Presenter 08.c) Latest Achievements in Scientific Ocean and Continental Drilling  Presenter | 
| Agemar, Thorsten | 14.b) How can research data infrastructures meet today’s and future needs of the geosciences?  Presenter | 
| Agiadi, Konstantina | 08.c) Latest Achievements in Scientific Ocean and Continental Drilling | 
| Aguilera, Felipe | 08.a) Magmatism, volcanism, and related processes  Presenter | 
| Ahlers, Patrick | 03.f) Exploration of Evaporites and their importance for Resources | 
| Ahlers, Steffen | 05.a) Host rock characterization and long-term safety of deep geological repositories for high-level radioactive waste  Presenter Poster social | 
| Ai, Lun | 08.a) Magmatism, volcanism, and related processes  Presenter | 
| Aigner, Tom | 02.c) Sedimentary basins across time: exploring sedimentary strata and their depositional environments | 
| Al-Aghbary, Magued | 04.a) Geothermal Resources – from Play Analysis to Case Studies | 
| Al-Aghbary, Magued | 14.c) Data Meets Earth: AI-Driven Innovations in Geoscience  Presenter | 
| Albert, Richard | 03.a) Mineral Exploration, Economic and Ore Deposit Geology | 
| Albrecht, Regina | Poster social  Presenter | 
| Alemu, Addis Kokeb | 07.b) Palaeoenvironmental analysis from proxies 12.a) Advancements on the distribution, reactivity and behaviour of TCEs in aquatic systems: updates and future research direction  Presenter | 
| Alexandrakis-Zieger, C. | Poster social | 
| Alirezaei, Saeed | Poster social | 
| ALLOUBAN, Mustapha | Poster social | 
| Altenberger, Florian | Poster social | 
| Anan, Tarek | 02.c) Sedimentary basins across time: exploring sedimentary strata and their depositional environments | 
| Andrić-Tomašević, Nevena | Poster social | 
| Ansorge, Jörg | 08.a) Magmatism, volcanism, and related processes | 
| Arenas, Ricardo | 15.a) Young Scientist Session | 
| Arenas, Ricardo | 08.d) Supercontinents through space and time  Presenter | 
| Armstrong, Richard A. | Poster social | 
| Arndt, Iris | Poster social  Presenter | 
| Artmann, Andreas | 05.c) Groundwater under quality stress – hydrogeochemical consequences of human action | 
| Arzamastsev, Andrei | 03.a) Mineral Exploration, Economic and Ore Deposit Geology | 
| Auderset, Alexandra | 07.b) Palaeoenvironmental analysis from proxies | 
| Auer, Alexander | Poster social | 
| Auer, Christian | Poster social | 
| Auer, Gerald | 07.b) Palaeoenvironmental analysis from proxies Poster social | 
| Auer, Thomas | Poster social | 
| Augustsson, Carita | 02.c) Sedimentary basins across time: exploring sedimentary strata and their depositional environments Poster social | 
| Aulinas, Meritxell | 08.a) Magmatism, volcanism, and related processes |