| 21 八月 | Potsdamer Mappertreffen × 218. OSM-Stammtisch Berlin-Brandenburg | Potsdam, Brandenburg, Germany |
| 24 八月 | Bremer Mappertreffen | Bremen, Bremen, Germany |
| 25 八月 | OSM-Verkehrswende #78 | Berlin, Germany |
| 26 八月 | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 26 八月 | Würzburger OSM-Treffen | Würzburg, Bavaria, Germany |
| 26 八月 | 79. Wiener OSM-Stammtisch | Vienna, Austria |
| 27 八月 | OpenStreetMap West Bengal Mapping Party + AnkushTheHero Day |
| 28–30 八月 | State of the Map 2026 | Champs-sur-Marne, Ile-de-France, France |
| 28 八月 | Essen OSM-Treffen | Essen, North Rhine-Westphalia, Germany |
| 30 八月 | Mapping meetup in Uppsala | Uppsala, Sweden |
| 31 八月 | OSM-Stammtisch Hannover | Hanover, Lower Saxony, Germany |
| 31 八月 | Rhein-Neckar OSM Treffen | Heidelberg, Baden-Württemberg, Germany |
| 1 九月 | OSM-Stammtisch Münster | Münster, North Rhine-Westphalia, Germany |
| 1 九月 | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 1 九月 | Missing Maps London Mapathon Beginner Friendly (with Training) (Online) [eng] |
| 2 九月 | SOTM/2 CZ | Prague, Czechia |
| 2 九月 | OSM Indoor Meetup |
| 2 九月 | Stuttgarter OpenStreetMap-Treffen | Stuttgart, Baden-Württemberg, Germany |
| 3 九月 | Rentrée bordelaise du groupe local OpenStreetMap | Bordeaux, Nouvelle-Aquitaine, France |
| 3 九月 | Angers Rencontre mensuelle OpenStreetMap | Angers, Pays de la Loire, France |
| 5 九月 | OSM India - Monthly Online Mapathon | New Delhi, India |
| 7 九月 | OpenStreetMap x Wikidata Taipei #92 | Chengnei, Taipei, Taiwan |
| 8 九月 | Braunschweiger Mappertreffen im Stratum 0 Hackerspace | Brunswick, Lower Saxony, Germany |
| 8 九月 | Hamburger Mappertreffen | Hamburg, Germany |
| 8 九月 | OSM-Stammtisch Ulm/Neu-Ulm | Neu-Ulm, Bavaria, Germany |
| 10 九月 | Münchner OSM-Treffen | Munich, Bavaria, Germany |
| 13 九月 | OSMmapperCPH | Copenhagen, Capital Region of Denmark, Denmark |
| 13 九月 | OSM Delhi Mapping Party No.32 (Outside Delhi) | New Delhi, India |
| 14 九月 | CartONG : Mapathons en ligne 2026-2027 |
| 15 九月 | Missing Maps London Mid-Month for Advanced Mappers (no training provided) (Online) [eng] |
| 15 九月 | 204. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 15 九月 | 22. Österreichischer OSM-Stammtisch (online) | Stainach-Pürgg, Styria, Austria |
| 15 九月 | OSM-Stammtisch Chemnitz | Chemnitz, Saxony, Germany |
| 15 九月 | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 16 九月 | Map The Climate! Ein Mapathon | St. Gallen, St. Gallen, Switzerland |
| 16 九月 | OSM Stammtisch Köln | Cologne, North Rhine-Westphalia, Germany |
| 22 九月 | East Midlands pub meet-up | Derby, England, United Kingdom |
| 24 九月 | OSM-Treffen Freiburg/Br. | Freiburg im Breisgau, Baden-Württemberg, Germany |
| 25 九月 | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 26–27 九月 | Karlsruhe Hack Weekend September 2026 | Karlsruhe, Baden-Württemberg, Germany |
| 26 九月 | Sudan Solidarity Series |
| 27 九月 | Mapping meetup in Uppsala | Uppsala, Sweden |
| 28 九月 | CartONG : Mapathons en ligne 2026-2027 |
| 30 九月 | Rhein-Neckar OSM Treffen | Mannheim, Baden-Württemberg, Germany |
| 1 十月 | Angers Rencontre mensuelle OpenStreetMap | Angers, Pays de la Loire, France |
| 2–4 十月 | Hackathon Wikimedia & OSM | Messina, Sicily, Italy |
| 2–4 十月 | FOSSGIS-OSM-Communitytreffen Nr. 26 im Linuxhotel | Essen, North Rhine-Westphalia, Germany |
| 3 十月 | Essen OSM-Treffen | Essen, North Rhine-Westphalia, Germany |
| 3 十月 | OSM India - Monthly Online Mapathon | New Delhi, India |
| 5 十月 | OpenStreetMap x Wikidata Taipei #93 | Chengnei, Taipei, Taiwan |
| 6 十月 | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 6 十月 | Missing Maps London Mapathon Beginner Friendly (with Training) (Online) [eng] |
| 11 十月 | OSM Delhi Mapping Party No.33 (East Zone) | New Delhi, India |
| 12 十月 | CartONG : Mapathons en ligne 2026-2027 |
| 13 十月 | Münchner OSM-Treffen | Munich, Bavaria, Germany |
| 13 十月 | Hamburger Mappertreffen | Hamburg, Germany |
| 13 十月 | OSM-Stammtisch Ulm/Neu-Ulm | Neu-Ulm, Bavaria, Germany |
| 15 十月 | FOSS4G Belgium | Brussels, Belgium |
| 20 十月 | Missing Maps London Mid-Month for Advanced Mappers (no training provided) (Online) [eng] |
| 20 十月 | OSM-Stammtisch Chemnitz | Chemnitz, Saxony, Germany |
| 20 十月 | 205. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 20 十月 | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 25 十月 | Mapping meetup in Uppsala | Uppsala, Sweden |
| 26 十月 | CartONG : Mapathons en ligne 2026-2027 |
| 26 十月 | Rhein-Neckar OSM Treffen | Heidelberg, Baden-Württemberg, Germany |
| 27–29 十月 | State of the Map LATAM 2026 | Mexico City, Mexico City, Mexico |
| 27 十月 | 80. Wiener OSM-Stammtisch | Vienna, Austria |
| 28 十月 | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 3 十一月 | Missing Maps London Mapathon Beginner Friendly (with Training) (Online) [eng] |
| 7 十一月 | Maker Days Salzburg | Salzburg, Salzburg, Austria |
| 7 十一月 | OSM India - Monthly Online Mapathon | New Delhi, India |
| 8 十一月 | OSM Delhi Mapping Party No.34 (South Zone) | New Delhi, India |
| 9 十一月 | CartONG : Mapathons en ligne 2026-2027 |
| 9 十一月 | OpenStreetMap x Wikidata Taipei #94 | Chengnei, Taipei, Taiwan |
| 10 十一月 | Hamburger Mappertreffen | Hamburg, Germany |
| 10 十一月 | OSM-Stammtisch Ulm/Neu-Ulm | Neu-Ulm, Bavaria, Germany |
| 11 十一月 | Münchner OSM-Treffen | Munich, Bavaria, Germany |
| 17 十一月 | Missing Maps London Mid-Month for Advanced Mappers (no training provided) (Online) [eng] |
| 17 十一月 | OSM-Stammtisch Chemnitz | Chemnitz, Saxony, Germany |
| 17 十一月 | 206. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 17 十一月 | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 23 十一月 | CartONG : Mapathons en ligne 2026-2027 |
| 25 十一月 | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 25 十一月 | Rhein-Neckar OSM Treffen | Mannheim, Baden-Württemberg, Germany |
| 1 十二月 | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 1 十二月 | Missing Maps London Mapathon Beginner Friendly (with Training) (Online) [eng] |
| 5 十二月 | OSM India - Monthly Online Mapathon | New Delhi, India |
| 7 十二月 | OpenStreetMap x Wikidata Taipei #95 | Chengnei, Taipei, Taiwan |
| 8 十二月 | Hamburger Mappertreffen | Hamburg, Germany |
| 8 十二月 | OSM-Stammtisch Ulm/Neu-Ulm | Neu-Ulm, Bavaria, Germany |
| 9 十二月 | 23. Österreichischer OSM-Stammtisch (online) | Stainach-Pürgg, Styria, Austria |
| 10 十二月 | Münchner OSM-Treffen | Munich, Bavaria, Germany |
| 13 十二月 | OSM Delhi Mapping Party No.35 (Outside Delhi) | New Delhi, India |
| 13 十二月 | Essen OSM-Treffen | Essen, North Rhine-Westphalia, Germany |
| 14 十二月 | CartONG : Mapathons en ligne 2026-2027 |
| 15 十二月 | Missing Maps London Mid-Month for Advanced Mappers (no training provided) (Online) [eng] |
| 15 十二月 | OSM-Stammtisch Chemnitz | Chemnitz, Saxony, Germany |
| 15 十二月 | 207. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 15 十二月 | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 18 十二月 | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 11 一月 | CartONG : Mapathons en ligne 2026-2027 |
| 25 一月 | CartONG : Mapathons en ligne 2026-2027 |
| 25 一月 | Rhein-Neckar OSM Treffen | Heidelberg, Baden-Württemberg, Germany |
| 8 二月 | CartONG : Mapathons en ligne 2026-2027 |
| 22 二月 | CartONG : Mapathons en ligne 2026-2027 |
| 8 三月 | CartONG : Mapathons en ligne 2026-2027 |
| 22 三月 | CartONG : Mapathons en ligne 2026-2027 |
| 29 三月 | Rhein-Neckar OSM Treffen | Heidelberg, Baden-Württemberg, Germany |
| 12 四月 | CartONG : Mapathons en ligne 2026-2027 |
| 26 四月 | CartONG : Mapathons en ligne 2026-2027 |
| 10 五月 | CartONG : Mapathons en ligne 2026-2027 |
| 24 五月 | CartONG : Mapathons en ligne 2026-2027 |
| 31 五月 | Rhein-Neckar OSM Treffen | Heidelberg, Baden-Württemberg, Germany |
| 14 六月 | CartONG : Mapathons en ligne 2026-2027 |
| 28 六月 | CartONG : Mapathons en ligne 2026-2027 |
| 26 七月 | Rhein-Neckar OSM Treffen | Heidelberg, Baden-Württemberg, Germany |
| 27 九月 | Rhein-Neckar OSM Treffen | Heidelberg, Baden-Württemberg, Germany |
| 29 十一月 | Rhein-Neckar OSM Treffen | Heidelberg, Baden-Württemberg, Germany |
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