| 4 سپتامبر | OSM Africa Monthly Mapathon: Map Malawi |
| 27 سپتامبر–2 اکتبر | FOSS4G 2021 Buenos Aires - Online Edition |
| 27 سپتامبر | Bremer Mappertreffen (Online) | Bremen, Free Hanseatic City of Bremen, Germany |
| 27 سپتامبر | OSM Fonó | Hungary |
| 28 سپتامبر | Mapathon Missing Maps – Cartographier des cartes humanitaires sur un mode collaboratif et libre. | Grenoble, Auvergne-Rhône-Alpes, France |
| 28 سپتامبر | South Bay Map Night | San Jose, California, United States |
| 28 سپتامبر | East Midlands OSM Pub Meet-up : Derby | Derby, England, United Kingdom |
| 28 سپتامبر | Virtual OpenStreetMap Belgium meeting | City of Brussels, Belgium |
| 30 سپتامبر | Missing Maps mapathon Slovakia online #4 | District of Žilina, Region of Žilina, Slovakia |
| 2 اکتبر | 京都！街歩き！マッピングパーティ：第26回 Re:一休寺 | Kyotanabe, Japan |
| 4 اکتبر | OpenStreetMap x Wikidata Taipei #33 | Huashan, Taipei, Taiwan |
| 5 اکتبر | Missing Maps London Mapathon | Westminster, England, United Kingdom |
| 5 اکتبر | Virtuelles Niederbayern-Treffen | Kothingeichendorf, Landau an der Isar, Bavaria, Germany |
| 5 اکتبر | Stuttgarter Stammtisch (Online) | Stuttgart, Baden-Württemberg, Germany |
| 6 اکتبر | London pub meet-up | Kensington, Westminster, England, United Kingdom |
| 7 اکتبر | Online validation mapathon | Prague, Prague, Czechia |
| 7 اکتبر | OSM-Treffen Bochum (Oktober) | Bochum, North Rhine-Westphalia, Germany |
| 8 اکتبر | UN Mappers: MaPathon - le Università a servizio della cooperazione internazionale |
| 8 اکتبر | 160. Berlin-Brandenburg OpenStreetMap Stammtisch | Berlin, Berlin, Germany |
| 9 اکتبر | Journey to the Centers of Michigan | Michigan, United States |
| 11 اکتبر | OSM-Treffen Zürich | Zurich, Zurich, Switzerland |
| 12 اکتبر | Hamburger Mappertreffen | Hamburg, Germany |
| 14 اکتبر | OpenStreetMap Michigan Meetup |
| 19 اکتبر | 144. Treffen des OSM-Stammtisches Bonn | Bonn, North Rhine-Westphalia, Germany |
| 19 اکتبر | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 27 اکتبر | Düsseldorfer OSM-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 30 اکتبر | OSM Nederland maandelijkse bijeenkomst (online) | Amsterdam, North Holland, Netherlands |
| 6 نوامبر | OSM Local Chapters & Communities Virtual Congress |
| 11 نوامبر | OSM-Treffen Zürich | Zurich, Zurich, Switzerland |
| 16 نوامبر | 145. Treffen des OSM-Stammtisches Bonn | Bonn, North Rhine-Westphalia, Germany |
| 16 نوامبر | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 17 نوامبر | OSM-Stammtisch Köln | Cologne, North Rhine-Westphalia, Germany |
| 19–21 نوامبر | State of the Map Africa 2021 |
| 22 نوامبر | HOT Summit 2021 |
| 24 نوامبر | Düsseldorfer OSM-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 21 دسامبر | 146. Treffen des OSM-Stammtisches Bonn | Bonn, North Rhine-Westphalia, Germany |
| 21 دسامبر | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 29 دسامبر | Düsseldorfer OSM-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
– همچنین: رویدادهای گذشته
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