| 5 September | OSM India - Monthly Online Mapathon | New Delhi, Delhi, India |
| 6–7 September | State of the Map Asia 2026 | Osaka, Japan |
| 7 September | OpenStreetMap x Wikidata Taipei #92 | Chengnei, Taipei, Taiwan |
| 8 September | Mappy Hour OSM España | Madrid, Community of Madrid, Spain |
| 8 September | Braunschweiger Mappertreffen im Stratum 0 Hackerspace | Brunswick, Lower Saxony, Germany |
| 8 September | Hamburger Mappertreffen | Hamburg, Germany |
| 8 September | OSM-Stammtisch Ulm/Neu-Ulm | Neu-Ulm, Bavaria, Germany |
| 9 September | Rencontre locale de Touraine | Tours, Centre-Val de Loire, France |
| 10 September | 219. OSM-Stammtisch Berlin-Brandenburg | Berlin, Germany |
| 10 September | Münchner OSM-Treffen | Munich, Bavaria, Germany |
| 10 September | OSM-Treffen Bochum | Bochum, North Rhine-Westphalia, Germany |
| 11 September | 191. OSM-Stammtisch Zürich | Zurich, Zurich, Switzerland |
| 13 September | OSMmapperCPH | Copenhagen, Capital Region of Denmark, Denmark |
| 13 September | OSM Delhi Mapping Party No.32 (South Extension) | Delhi, Delhi, India |
| 14 September | EAW Volunteering Event | Greater London, England, United Kingdom |
| 14 September | CartONG : Mapathons en ligne 2026-2027 |
| 15 September | Missing Maps London Mid-Month for Advanced Mappers (no training provided) (Online) [eng] |
| 15 September | Bay Area WikiSalon | San Francisco, California, United States |
| 15 September | Réunion du groupe local de Lyon | Lyon, Auvergne-Rhône-Alpes, France |
| 15 September | South Bay Map Night | San Jose, California, United States |
| 15 September | OSM-Stammtisch Chemnitz | Chemnitz, Saxony, Germany |
| 15 September | 204. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 15 September | 22. Österreichischer OSM-Stammtisch (online) | Stainach-Pürgg, Styria, Austria |
| 15 September | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 16 September | Map The Climate! Ein Mapathon | St. Gallen, St. Gallen, Switzerland |
| 16 September | OSM Stammtisch Köln | Cologne, North Rhine-Westphalia, Germany |
| 16 September | COntrib'atelier | Nantes, Pays de la Loire, France |
| 16 September | Réunion du groupe local de Vienne | Vienne, Auvergne-Rhône-Alpes, France |
| 18–19 September | OSM auf der Kielux 2026 | Kiel, Schleswig-Holstein, Germany |
| 22 September | East Midlands pub meet-up | Derby, England, United Kingdom |
| 22 September | OSM-Verkehrswende #79 | Berlin, Germany |
| 23 September | OpenStreetMap, la carte à la carte ! | Nantes, Pays de la Loire, France |
| 23 September | Stammtisch | Hanover, Lower Saxony, Germany |
| 23 September | London pub meet-up | City of Westminster, England, United Kingdom |
| 23 September | Würzburger OSM-Treffen | Würzburg, Bavaria, Germany |
| 24 September | Pravidelný Missing Maps CZ-SK online Mapathon |
| 24 September | OSM-Treffen Freiburg/Br. | Freiburg im Breisgau, Baden-Württemberg, Germany |
| 25–27 September | OSM India @ IndiaFOSS 2026 | Bengaluru, Karnataka, India |
| 25 September | UN Mappers Mappy Hour |
| 25 September | Conferencia "OpenStreetMap: Datos abiertos y más" | Torreón, Coahuila, Mexico |
| 25 September | Taller "Mapeando mi entorno" | Torreón, Coahuila, Mexico |
| 25 September | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 26–27 September | Karlsruhe Hack Weekend September 2026 | Karlsruhe, Baden-Württemberg, Germany |
| 26 September | OpenStreetMap, la balade de la data | Nantes, Pays de la Loire, France |
| 26 September | Sudan Solidarity Series |
| 27 September | Mapping meetup in Uppsala | Uppsala, Sweden |
| 28 September | CartONG : Mapathons en ligne 2026-2027 |
| 30 September | Rhein-Neckar OSM Treffen | Mannheim, Baden-Württemberg, Germany |
| 1 Oktober | Angers Rencontre mensuelle OpenStreetMap | Angers, Pays de la Loire, France |
| 1 Oktober | Rencontre mensuelle des contributeurs Paris sud | Montrouge, Ile-de-France, France |
| 2–4 Oktober | Hackathon Wikimedia & OSM | Messina, Sicily, Italy |
| 2–4 Oktober | FOSSGIS-OSM-Communitytreffen Nr. 26 im Linuxhotel | Essen, North Rhine-Westphalia, Germany |
| 3 Oktober | Essen OSM-Treffen | Essen, North Rhine-Westphalia, Germany |
| 3 Oktober | OSM India - Monthly Online Mapathon | New Delhi, India |
| 5 Oktober | OpenStreetMap x Wikidata Taipei #93 | Chengnei, Taipei, Taiwan |
| 6–9 Oktober | Open Transport Community Conference 2026 | Bern, Bern, Switzerland |
| 6 Oktober | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 6 Oktober | Missing Maps London Mapathon Beginner Friendly (with Training) (Online) [eng] |
| 7 Oktober | Stuttgarter OpenStreetMap-Treffen | Stuttgart, Baden-Württemberg, Germany |
| 8 Oktober | OSM-Treffen Bochum | Bochum, North Rhine-Westphalia, Germany |
| 11 Oktober | OSMmapperCPH | Copenhagen, Capital Region of Denmark, Denmark |
| 11 Oktober | OSM Delhi Mapping Party No.33 (East Zone) | New Delhi, India |
| 12 Oktober | CartONG : Mapathons en ligne 2026-2027 |
| 13 Oktober | Münchner OSM-Treffen | Munich, Bavaria, Germany |
| 13 Oktober | Hamburger Mappertreffen | Hamburg, Germany |
| 13 Oktober | OSM-Stammtisch Ulm/Neu-Ulm | Neu-Ulm, Bavaria, Germany |
| 15 Oktober | FOSS4G Belgium | Brussels, Belgium |
| 17 Oktober | Atelier OpenStreetMap Metz | Metz, Grand Est, France |
| 20 Oktober | Missing Maps London Mid-Month for Advanced Mappers (no training provided) (Online) [eng] |
| 20 Oktober | Réunion du groupe local de Lyon | Lyon, Auvergne-Rhône-Alpes, France |
| 20 Oktober | 205. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 20 Oktober | OSM-Stammtisch Chemnitz | Chemnitz, Saxony, Germany |
| 20 Oktober | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 24–25 Oktober | OSM Hackweekend Berlin-Brandenburg 10/2026 | Berlin, Germany |
| 25 Oktober | Mapping meetup in Uppsala | Uppsala, Sweden |
| 26 Oktober | CartONG : Mapathons en ligne 2026-2027 |
| 26 Oktober | Rhein-Neckar OSM Treffen | Heidelberg, Baden-Württemberg, Germany |
| 27–29 Oktober | State of the Map Latam 2026 | Mexico City, Mexico City, Mexico |
| 27 Oktober | 80. Wiener OSM-Stammtisch | Vienna, Austria |
| 28 Oktober | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 3 November | Missing Maps London Mapathon Beginner Friendly (with Training) (Online) [eng] |
| 5 November | Rencontre mensuelle des contributeurs Paris sud | Montrouge, Ile-de-France, France |
| 7 November | Maker Days Salzburg | Salzburg, Salzburg, Austria |
| 7 November | OSM India - Monthly Online Mapathon | New Delhi, India |
| 8 November | OSM Delhi Mapping Party No.34 (South Zone) | New Delhi, India |
| 9 November | CartONG : Mapathons en ligne 2026-2027 |
| 9 November | OpenStreetMap x Wikidata Taipei #94 | Chengnei, Taipei, Taiwan |
| 10 November | Hamburger Mappertreffen | Hamburg, Germany |
| 10 November | OSM-Stammtisch Ulm/Neu-Ulm | Neu-Ulm, Bavaria, Germany |
| 11 November | Münchner OSM-Treffen | Munich, Bavaria, Germany |
| 17 November | Missing Maps London Mid-Month for Advanced Mappers (no training provided) (Online) [eng] |
| 17 November | Réunion du groupe local de Lyon | Lyon, Auvergne-Rhône-Alpes, France |
| 17 November | 206. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 17 November | OSM-Stammtisch Chemnitz | Chemnitz, Saxony, Germany |
| 17 November | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 21 November | Atelier OpenStreetMap Metz | Metz, Grand Est, France |
| 23 November | CartONG : Mapathons en ligne 2026-2027 |
| 25 November | Rhein-Neckar OSM Treffen | Mannheim, Baden-Württemberg, Germany |
| 25 November | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 1 Desember | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 1 Desember | Missing Maps London Mapathon Beginner Friendly (with Training) (Online) [eng] |
| 3 Desember | Rencontre mensuelle des contributeurs Paris sud | Montrouge, Ile-de-France, France |
| 5 Desember | OSM India - Monthly Online Mapathon | New Delhi, India |
| 7 Desember | OpenStreetMap x Wikidata Taipei #95 | Chengnei, Taipei, Taiwan |
| 8 Desember | Hamburger Mappertreffen | Hamburg, Germany |
| 8 Desember | OSM-Stammtisch Ulm/Neu-Ulm | Neu-Ulm, Bavaria, Germany |
| 9 Desember | 23. Österreichischer OSM-Stammtisch (online) | Stainach-Pürgg, Styria, Austria |
| 10 Desember | Münchner OSM-Treffen | Munich, Bavaria, Germany |
| 13 Desember | OSM Delhi Mapping Party No.35 (Outside Delhi) | New Delhi, India |
| 13 Desember | Essen OSM-Treffen | Essen, North Rhine-Westphalia, Germany |
| 14 Desember | CartONG : Mapathons en ligne 2026-2027 |
| 15 Desember | Missing Maps London Mid-Month for Advanced Mappers (no training provided) (Online) [eng] |
| 15 Desember | Réunion du groupe local de Lyon | Lyon, Auvergne-Rhône-Alpes, France |
| 15 Desember | OSM-Stammtisch Chemnitz | Chemnitz, Saxony, Germany |
| 15 Desember | 207. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 15 Desember | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 18 Desember | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 11 Januari | CartONG : Mapathons en ligne 2026-2027 |
| 25 Januari | CartONG : Mapathons en ligne 2026-2027 |
| 25 Januari | Rhein-Neckar OSM Treffen | Heidelberg, Baden-Württemberg, Germany |
| 8 Februari | CartONG : Mapathons en ligne 2026-2027 |
| 22 Februari | CartONG : Mapathons en ligne 2026-2027 |
| 8 Maret | CartONG : Mapathons en ligne 2026-2027 |
| 22 Maret | CartONG : Mapathons en ligne 2026-2027 |
| 29 Maret | Rhein-Neckar OSM Treffen | Heidelberg, Baden-Württemberg, Germany |
| 12 April | CartONG : Mapathons en ligne 2026-2027 |
| 26 April | CartONG : Mapathons en ligne 2026-2027 |
| 10 Mei | CartONG : Mapathons en ligne 2026-2027 |
| 24 Mei | CartONG : Mapathons en ligne 2026-2027 |
| 31 Mei | Rhein-Neckar OSM Treffen | Heidelberg, Baden-Württemberg, Germany |
| 14 Juni | CartONG : Mapathons en ligne 2026-2027 |
| 28 Juni | CartONG : Mapathons en ligne 2026-2027 |
| 26 Juli | Rhein-Neckar OSM Treffen | Heidelberg, Baden-Württemberg, Germany |
| 27 September | Rhein-Neckar OSM Treffen | Heidelberg, Baden-Württemberg, Germany |
| 29 November | Rhein-Neckar OSM Treffen | Heidelberg, Baden-Württemberg, Germany |
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