| JAN | 11-15 | 237th Meeting of the American Astronomical Society, Virtual |
| 27 | MEPAG Virtual Meeting #11, Virtual |
| 28-4 | 43rd COSPAR Scientific Assembly, Sydney, Australia |
| FEB | 2-5 | Science with UV-efficient ground-based spectrographs, Virtual |
| 3-5 | Mercury Exploration Assessment Group (MExAG) Annual Meeting, Virtual |
| 9-11 | Outer Planets Assessment Group (OPAG) Meeting, Virtual |
| 22-26 | Habitable Worlds, Virtual |
| MAR | 15-19 | 52nd Lunar and Planetary Science Conference, Virtual |
| 15-May 7 | White Dwarfs as Probes of the Evolution of Planets, Stars, the Milky Way and the Expanding Universe, Santa Barbara, CA, USA |
| APR | 1-2 | GSA Southeastern Meeting 2021, Virtual |
| 14-16 | The UK Exoplanet Community Meeting 2021, Birmingham, UK |
| 19-30 | Virtual European Geophysical Union Conference, Virtual |
| MAY | 3-5 | Stars and Planets in the Ultraviolet: A Cross-Community Symposium, Virtual |
| 11-15 | Distributed Volcanism and Distributed Volcanic Hazards, Flagstaff, AZ, USA
(Postponed to 19-23 September 2022, Flagstaff, AZ, USA) |
| 17-19 | GAC-MAC 2021: Exploring Geosciences Through Time and Space – DELAYED UNTIL NOVEMBER 2021, London, Canada |
| 24-28 | XMM-Newton (Virtual) Workshop 2021: A High-Energy View of Exoplanets and Their Environments, Virtual |
| 30-1 | Japan Geoscience Union Meeting 2021, Yokohama City, Japan |
| JUN | 3-6 | Japan Geoscience Union Meeting 2021, Virtual |
| 16-18 | Workshop on Terrestrial Analogs for Planetary Exploration, Virtual |
| 28-2 | 5th Planetary Data Workshop and Planetary Science Informatics & Data Analytics, Virtual |
| JUL | 4-9 | Goldschmidt2021 Conference, Lyon, France |
| 5-8 | 15th Hellenic Astronomical Conference, Patras, Greece |
| 19-23 | 2021 Sagan Summer Workshop: Circumstellar Disks and Young Planets, Pasadena, CA, USA (Virtual) |
| AUG | 1-6 | 18th Annual Meeting of the Asia Oceania Geosciences Society (AOGS2021), Virtual |
| 2-6 | TESS Science Conference II, Cambridge, MA, USA |
| 16-21 | 36th International Geological Congress (IGC), Dehli, India |
| SEP | 13-17 | Planet-Forming Disks: From Surveys to Answers, Leiden, The Netherlands |
| 20-24 | Spatially Resolved Spectroscopy with Extremely Large Telescopes, Oxford, United Kingdom |
| OCT | 3-8 | DPS 53rd Annual Meeting, Virtual |
| 4-6 | Martian Enigmas 2021, Houston, TX, USA |
| 4-29 | Gaps, Rings, Spirals, and Vortices: Structure Formation in Planet-Forming Disks, Munich, Germany |
| 5-9 | Ultraviolet Astronomy in the XXI Century: 5th Workshop of the Network for Ultraviolet Astronomy – Face-to-Face, Vitoria, Spain |
| 11-15 | PLATO Mission Conference 2021, Virtual |
| 12-14 | 72nd International Astronautical Conference, Dubai, United Arab Emirates |
| 25-28 | Brines Across the Solar System: Modern Brines, Virtual |
| NOV | 1-3 | GAC-MAC 2021: Exploring Geosciences Through Time and Space, London, Canada |
| 8-9 | 19th Meeting of the Venus Exploration Analysis Group (VEXAG), Virtual |
| 29-Dec 3 | Venera-D: Venus Cloud Habitability System Workshop, Virtual |
| DEC | 8-10 | PLATO Atmospheres Workshop, Virtual |
| 13-17 | AGU Fall Meeting 2021, Online and New Orleans, LA, USA (hybrid) |
| 16-21 | Pacifichem 2021, Online and Honolulu, HI, USA (hybrid) |
