| 25 August | OSM-Verkehrswende #78 | Berlin, Germany |
| 26 August | Würzburger OSM-Treffen | Würzburg, Bavaria, Germany |
| 26 August | 79. Wiener OSM-Stammtisch | Vienna, Austria |
| 26 August | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 27 August | OpenStreetMap West Bengal Mapping Party + AnkushTheHero Day |
| 28–30 August | State of the Map 2026 | Champs-sur-Marne, Ile-de-France, France |
| 28 August | Essen OSM-Treffen | Essen, North Rhine-Westphalia, Germany |
| 29 August | OSM Bengaluru Mapping Party | Bengaluru, Karnataka, India |
| 30 August | Mapping meetup in Uppsala | Uppsala, Sweden |
| 31 August | OSM-Stammtisch Hannover | Hanover, Lower Saxony, Germany |
| 31 August | Rhein-Neckar OSM Treffen | Heidelberg, Baden-Württemberg, Germany |
| 1 September | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 1 September | OSM-Stammtisch Münster | Münster, North Rhine-Westphalia, Germany |
| 1 September | South Bay Map Night | San Jose, California, United States |
| 1 September | Missing Maps London Mapathon Beginner Friendly (with Training) (Online) [eng] |
| 2 September | Kvartální OSM pivo - SOTM/2 CZ [Brno] | Brno, Czechia |
| 2 September | SOTM/2 CZ | Prague, Czechia |
| 2 September | OSM Indoor Meetup |
| 2 September | Stuttgarter OpenStreetMap-Treffen | Stuttgart, Baden-Württemberg, Germany |
| 3 September | Angers Rencontre mensuelle OpenStreetMap | Angers, Pays de la Loire, France |
| 3 September | Rentrée bordelaise du groupe local OpenStreetMap | Bordeaux, Nouvelle-Aquitaine, France |
| 3 September | Rencontre mensuelle des contributeurs Paris sud | Montrouge, Ile-de-France, France |
| 5 September | OSM India - Monthly Online Mapathon | New Delhi, India |
| 7 September | OpenStreetMap x Wikidata Taipei #92 | Chengnei, Taipei, Taiwan |
| 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 |
| 10 September | Münchner OSM-Treffen | Munich, Bavaria, Germany |
| 10 September | OSM-Treffen Bochum | Bochum, North Rhine-Westphalia, Germany |
| 13 September | OSMmapperCPH | Copenhagen, Capital Region of Denmark, Denmark |
| 13 September | OSM Delhi Mapping Party No.32 (Outside Delhi) | New Delhi, India |
| 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 | 204. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 15 September | 22. Österreichischer OSM-Stammtisch (online) | Stainach-Pürgg, Styria, Austria |
| 15 September | OSM-Stammtisch Chemnitz | Chemnitz, Saxony, Germany |
| 15 September | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 16 September | Map The Climate! Ein Mapathon | St. Gallen, St. Gallen, Switzerland |
| 16 September | COntrib'atelier | Nantes, Pays de la Loire, France |
| 16 September | OSM Stammtisch Köln | Cologne, North Rhine-Westphalia, Germany |
| 22 September | East Midlands pub meet-up | Derby, England, United Kingdom |
| 24 September | OSM-Treffen Freiburg/Br. | Freiburg im Breisgau, Baden-Württemberg, Germany |
| 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 | 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 October | Angers Rencontre mensuelle OpenStreetMap | Angers, Pays de la Loire, France |
| 1 October | Rencontre mensuelle des contributeurs Paris sud | Montrouge, Ile-de-France, France |
| 2–4 October | Hackathon Wikimedia & OSM | Messina, Sicily, Italy |
| 2–4 October | FOSSGIS-OSM-Communitytreffen Nr. 26 im Linuxhotel | Essen, North Rhine-Westphalia, Germany |
| 3 October | Essen OSM-Treffen | Essen, North Rhine-Westphalia, Germany |
| 3 October | OSM India - Monthly Online Mapathon | New Delhi, India |
| 5 October | OpenStreetMap x Wikidata Taipei #93 | Chengnei, Taipei, Taiwan |
| 6 October | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 6 October | Missing Maps London Mapathon Beginner Friendly (with Training) (Online) [eng] |
| 8 October | OSM-Treffen Bochum | Bochum, North Rhine-Westphalia, Germany |
| 11 October | OSMmapperCPH | Copenhagen, Capital Region of Denmark, Denmark |
| 11 October | OSM Delhi Mapping Party No.33 (East Zone) | New Delhi, India |
| 12 October | CartONG : Mapathons en ligne 2026-2027 |
| 13 October | Münchner OSM-Treffen | Munich, Bavaria, Germany |
| 13 October | Hamburger Mappertreffen | Hamburg, Germany |
| 13 October | OSM-Stammtisch Ulm/Neu-Ulm | Neu-Ulm, Bavaria, Germany |
| 15 October | FOSS4G Belgium | Brussels, Belgium |
| 20 October | Missing Maps London Mid-Month for Advanced Mappers (no training provided) (Online) [eng] |
| 20 October | 205. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 20 October | OSM-Stammtisch Chemnitz | Chemnitz, Saxony, Germany |
| 20 October | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 24–25 October | OSM Hackweekend Berlin-Brandenburg 10/2026 | Berlin, Germany |
| 25 October | Mapping meetup in Uppsala | Uppsala, Sweden |
| 26 October | CartONG : Mapathons en ligne 2026-2027 |
| 26 October | Rhein-Neckar OSM Treffen | Heidelberg, Baden-Württemberg, Germany |
| 27–29 October | State of the Map LATAM 2026 | Mexico City, Mexico City, Mexico |
| 27 October | 80. Wiener OSM-Stammtisch | Vienna, Austria |
| 28 October | 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 | OSM-Stammtisch Chemnitz | Chemnitz, Saxony, Germany |
| 17 November | 206. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 17 November | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 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 December | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 1 December | Missing Maps London Mapathon Beginner Friendly (with Training) (Online) [eng] |
| 3 December | Rencontre mensuelle des contributeurs Paris sud | Montrouge, Ile-de-France, France |
| 5 December | OSM India - Monthly Online Mapathon | New Delhi, India |
| 7 December | OpenStreetMap x Wikidata Taipei #95 | Chengnei, Taipei, Taiwan |
| 8 December | Hamburger Mappertreffen | Hamburg, Germany |
| 8 December | OSM-Stammtisch Ulm/Neu-Ulm | Neu-Ulm, Bavaria, Germany |
| 9 December | 23. Österreichischer OSM-Stammtisch (online) | Stainach-Pürgg, Styria, Austria |
| 10 December | Münchner OSM-Treffen | Munich, Bavaria, Germany |
| 13 December | OSM Delhi Mapping Party No.35 (Outside Delhi) | New Delhi, India |
| 13 December | Essen OSM-Treffen | Essen, North Rhine-Westphalia, Germany |
| 14 December | CartONG : Mapathons en ligne 2026-2027 |
| 15 December | Missing Maps London Mid-Month for Advanced Mappers (no training provided) (Online) [eng] |
| 15 December | OSM-Stammtisch Chemnitz | Chemnitz, Saxony, Germany |
| 15 December | 207. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 15 December | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 18 December | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 11 January | CartONG : Mapathons en ligne 2026-2027 |
| 25 January | CartONG : Mapathons en ligne 2026-2027 |
| 25 January | Rhein-Neckar OSM Treffen | Heidelberg, Baden-Württemberg, Germany |
| 8 February | CartONG : Mapathons en ligne 2026-2027 |
| 22 February | CartONG : Mapathons en ligne 2026-2027 |
| 8 March | CartONG : Mapathons en ligne 2026-2027 |
| 22 March | CartONG : Mapathons en ligne 2026-2027 |
| 29 March | 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 May | CartONG : Mapathons en ligne 2026-2027 |
| 24 May | CartONG : Mapathons en ligne 2026-2027 |
| 31 May | Rhein-Neckar OSM Treffen | Heidelberg, Baden-Württemberg, Germany |
| 14 June | CartONG : Mapathons en ligne 2026-2027 |
| 28 June | CartONG : Mapathons en ligne 2026-2027 |
| 26 July | 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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