| 28–30 8月 | State of the Map 2026 | Champs-sur-Marne, Ile-de-France, France |
| 30 8月 | 14th OpenStreetMap West Bengal Mapping Party + AnkushTheHero Day | Jalpaiguri, West Bengal, India |
| 30 8月 | OSM Mumbai Mapping Party No.14 (Sion) | Mumbai, Maharashtra, India |
| 30 8月 | Mapping meetup in Uppsala | Uppsala, Sweden |
| 31 8月 | OSM-Stammtisch Hannover | Hanover, Lower Saxony, Germany |
| 31 8月 | Rhein-Neckar OSM Treffen | Heidelberg, Baden-Württemberg, Germany |
| 31 8月 | Rencontre Saint-Étienne et sud Loire | Saint-Étienne, Auvergne-Rhône-Alpes, France |
| 1 9月 | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 1 9月 | OSM-Stammtisch Münster | Münster, North Rhine-Westphalia, Germany |
| 1 9月 | Missing Maps London Mapathon Beginner Friendly (with Training) (Online) [eng] |
| 1 9月 | South Bay Map Night | San Jose, California, United States |
| 2 9月 | Kvartální OSM pivo - SOTM/2 CZ [Brno] | Brno, Czechia |
| 2 9月 | SOTM/2 CZ | Prague, Czechia |
| 2 9月 | OSM Indoor Meetup |
| 2 9月 | Stuttgarter OpenStreetMap-Treffen | Stuttgart, Baden-Württemberg, Germany |
| 3 9月 | Angers Rencontre mensuelle OpenStreetMap | Angers, Pays de la Loire, France |
| 3 9月 | Rentrée bordelaise du groupe local OpenStreetMap | Bordeaux, Nouvelle-Aquitaine, France |
| 3 9月 | Rencontre mensuelle des contributeurs Paris sud | Montrouge, Ile-de-France, France |
| 5 9月 | OSM India - Monthly Online Mapathon | New Delhi, Delhi, India |
| 6–7 9月 | State of the Map Asia 2026 | Osaka, Japan |
| 7 9月 | OpenStreetMap x Wikidata Taipei #92 | Chengnei, Taipei, Taiwan |
| 8 9月 | Mappy Hour OSM España | Madrid, Community of Madrid, Spain |
| 8 9月 | Braunschweiger Mappertreffen im Stratum 0 Hackerspace | Brunswick, Lower Saxony, Germany |
| 8 9月 | Hamburger Mappertreffen | Hamburg, Germany |
| 8 9月 | OSM-Stammtisch Ulm/Neu-Ulm | Neu-Ulm, Bavaria, Germany |
| 10 9月 | OSM-Treffen Bochum | Bochum, North Rhine-Westphalia, Germany |
| 10 9月 | Münchner OSM-Treffen | Munich, Bavaria, Germany |
| 13 9月 | OSMmapperCPH | Copenhagen, Capital Region of Denmark, Denmark |
| 13 9月 | OSM Delhi Mapping Party No.32 (Outside Delhi) | New Delhi, India |
| 14 9月 | EAW Volunteering Event | Greater London, England, United Kingdom |
| 14 9月 | CartONG : Mapathons en ligne 2026-2027 |
| 15 9月 | Missing Maps London Mid-Month for Advanced Mappers (no training provided) (Online) [eng] |
| 15 9月 | OSM-Stammtisch Chemnitz | Chemnitz, Saxony, Germany |
| 15 9月 | 22. Österreichischer OSM-Stammtisch (online) | Stainach-Pürgg, Styria, Austria |
| 15 9月 | 204. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 15 9月 | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 16 9月 | Map The Climate! Ein Mapathon | St. Gallen, St. Gallen, Switzerland |
| 16 9月 | Réunion du groupe local de Vienne | Vienne, Auvergne-Rhône-Alpes, France |
| 16 9月 | OSM Stammtisch Köln | Cologne, North Rhine-Westphalia, Germany |
| 16 9月 | COntrib'atelier | Nantes, Pays de la Loire, France |
| 18–19 9月 | OSM auf der Kielux 2026 | Kiel, Schleswig-Holstein, Germany |
| 22 9月 | East Midlands pub meet-up | Derby, England, United Kingdom |
| 22 9月 | OSM-Verkehrswende #79 | Berlin, Germany |
| 23 9月 | OpenStreetMap, la carte à la carte ! | Nantes, Pays de la Loire, France |
| 23 9月 | Würzburger OSM-Treffen | Würzburg, Bavaria, Germany |
| 24 9月 | OSM-Treffen Freiburg/Br. | Freiburg im Breisgau, Baden-Württemberg, Germany |
| 25–27 9月 | OSM India @ IndiaFOSS 2026 | Bengaluru, Karnataka, India |
| 25 9月 | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 26–27 9月 | Karlsruhe Hack Weekend September 2026 | Karlsruhe, Baden-Württemberg, Germany |
| 26 9月 | OpenStreetMap, la balade de la data | Nantes, Pays de la Loire, France |
| 26 9月 | Sudan Solidarity Series |
| 27 9月 | Mapping meetup in Uppsala | Uppsala, Sweden |
| 28 9月 | CartONG : Mapathons en ligne 2026-2027 |
| 30 9月 | Rhein-Neckar OSM Treffen | Mannheim, Baden-Württemberg, Germany |
| 1 10月 | Angers Rencontre mensuelle OpenStreetMap | Angers, Pays de la Loire, France |
| 1 10月 | Rencontre mensuelle des contributeurs Paris sud | Montrouge, Ile-de-France, France |
| 2–4 10月 | Hackathon Wikimedia & OSM | Messina, Sicily, Italy |
| 2–4 10月 | FOSSGIS-OSM-Communitytreffen Nr. 26 im Linuxhotel | Essen, North Rhine-Westphalia, Germany |
| 3 10月 | Essen OSM-Treffen | Essen, North Rhine-Westphalia, Germany |
| 3 10月 | OSM India - Monthly Online Mapathon | New Delhi, India |
| 5 10月 | OpenStreetMap x Wikidata Taipei #93 | Chengnei, Taipei, Taiwan |
| 6 10月 | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 6 10月 | Missing Maps London Mapathon Beginner Friendly (with Training) (Online) [eng] |
| 8 10月 | OSM-Treffen Bochum | Bochum, North Rhine-Westphalia, Germany |
| 11 10月 | OSMmapperCPH | Copenhagen, Capital Region of Denmark, Denmark |
| 11 10月 | OSM Delhi Mapping Party No.33 (East Zone) | New Delhi, India |
| 12 10月 | CartONG : Mapathons en ligne 2026-2027 |
| 13 10月 | Hamburger Mappertreffen | Hamburg, Germany |
| 13 10月 | Münchner OSM-Treffen | Munich, Bavaria, Germany |
| 13 10月 | OSM-Stammtisch Ulm/Neu-Ulm | Neu-Ulm, Bavaria, Germany |
| 15 10月 | FOSS4G Belgium | Brussels, Belgium |
| 20 10月 | Missing Maps London Mid-Month for Advanced Mappers (no training provided) (Online) [eng] |
| 20 10月 | OSM-Stammtisch Chemnitz | Chemnitz, Saxony, Germany |
| 20 10月 | 205. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 20 10月 | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 24–25 10月 | OSM Hackweekend Berlin-Brandenburg 10/2026 | Berlin, Germany |
| 25 10月 | Mapping meetup in Uppsala | Uppsala, Sweden |
| 26 10月 | CartONG : Mapathons en ligne 2026-2027 |
| 26 10月 | Rhein-Neckar OSM Treffen | Heidelberg, Baden-Württemberg, Germany |
| 27–29 10月 | State of the Map LATAM 2026 | Mexico City, Mexico City, Mexico |
| 27 10月 | 80. Wiener OSM-Stammtisch | Vienna, Austria |
| 28 10月 | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 3 11月 | Missing Maps London Mapathon Beginner Friendly (with Training) (Online) [eng] |
| 5 11月 | Rencontre mensuelle des contributeurs Paris sud | Montrouge, Ile-de-France, France |
| 7 11月 | Maker Days Salzburg | Salzburg, Salzburg, Austria |
| 7 11月 | OSM India - Monthly Online Mapathon | New Delhi, India |
| 8 11月 | OSM Delhi Mapping Party No.34 (South Zone) | New Delhi, India |
| 9 11月 | CartONG : Mapathons en ligne 2026-2027 |
| 9 11月 | OpenStreetMap x Wikidata Taipei #94 | Chengnei, Taipei, Taiwan |
| 10 11月 | Hamburger Mappertreffen | Hamburg, Germany |
| 10 11月 | OSM-Stammtisch Ulm/Neu-Ulm | Neu-Ulm, Bavaria, Germany |
| 11 11月 | Münchner OSM-Treffen | Munich, Bavaria, Germany |
| 17 11月 | Missing Maps London Mid-Month for Advanced Mappers (no training provided) (Online) [eng] |
| 17 11月 | 206. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 17 11月 | OSM-Stammtisch Chemnitz | Chemnitz, Saxony, Germany |
| 17 11月 | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 23 11月 | CartONG : Mapathons en ligne 2026-2027 |
| 25 11月 | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 25 11月 | Rhein-Neckar OSM Treffen | Mannheim, Baden-Württemberg, Germany |
| 1 12月 | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 1 12月 | Missing Maps London Mapathon Beginner Friendly (with Training) (Online) [eng] |
| 3 12月 | Rencontre mensuelle des contributeurs Paris sud | Montrouge, Ile-de-France, France |
| 5 12月 | OSM India - Monthly Online Mapathon | New Delhi, India |
| 7 12月 | OpenStreetMap x Wikidata Taipei #95 | Chengnei, Taipei, Taiwan |
| 8 12月 | Hamburger Mappertreffen | Hamburg, Germany |
| 8 12月 | OSM-Stammtisch Ulm/Neu-Ulm | Neu-Ulm, Bavaria, Germany |
| 9 12月 | 23. Österreichischer OSM-Stammtisch (online) | Stainach-Pürgg, Styria, Austria |
| 10 12月 | Münchner OSM-Treffen | Munich, Bavaria, Germany |
| 13 12月 | OSM Delhi Mapping Party No.35 (Outside Delhi) | New Delhi, India |
| 13 12月 | Essen OSM-Treffen | Essen, North Rhine-Westphalia, Germany |
| 14 12月 | CartONG : Mapathons en ligne 2026-2027 |
| 15 12月 | Missing Maps London Mid-Month for Advanced Mappers (no training provided) (Online) [eng] |
| 15 12月 | OSM-Stammtisch Chemnitz | Chemnitz, Saxony, Germany |
| 15 12月 | 207. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 15 12月 | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 18 12月 | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 11 1月 | CartONG : Mapathons en ligne 2026-2027 |
| 25 1月 | CartONG : Mapathons en ligne 2026-2027 |
| 25 1月 | Rhein-Neckar OSM Treffen | Heidelberg, Baden-Württemberg, Germany |
| 8 2月 | CartONG : Mapathons en ligne 2026-2027 |
| 22 2月 | CartONG : Mapathons en ligne 2026-2027 |
| 8 3月 | CartONG : Mapathons en ligne 2026-2027 |
| 22 3月 | CartONG : Mapathons en ligne 2026-2027 |
| 29 3月 | Rhein-Neckar OSM Treffen | Heidelberg, Baden-Württemberg, Germany |
| 12 4月 | CartONG : Mapathons en ligne 2026-2027 |
| 26 4月 | CartONG : Mapathons en ligne 2026-2027 |
| 10 5月 | CartONG : Mapathons en ligne 2026-2027 |
| 24 5月 | CartONG : Mapathons en ligne 2026-2027 |
| 31 5月 | Rhein-Neckar OSM Treffen | Heidelberg, Baden-Württemberg, Germany |
| 14 6月 | CartONG : Mapathons en ligne 2026-2027 |
| 28 6月 | CartONG : Mapathons en ligne 2026-2027 |
| 26 7月 | Rhein-Neckar OSM Treffen | Heidelberg, Baden-Württemberg, Germany |
| 27 9月 | Rhein-Neckar OSM Treffen | Heidelberg, Baden-Württemberg, Germany |
| 29 11月 | Rhein-Neckar OSM Treffen | Heidelberg, Baden-Württemberg, Germany |
Add your event to OpenStreetMap Calendar