| 29th September | PoliMappers Maptedì | Milan, Lombardy, Italy |
| 29th September | Asamblea General Extraordinaria de la Asociación OpenStreetMap España | Madrid, Community of Madrid, Spain |
| 29th September | South Bay Wiki and OpenStreetMap Meetup | Palo Alto, California, United States |
| 29th September | 4. OSM Stammtisch Magdeburg | Magdeburg, Saxony-Anhalt, Germany |
| 30th September | Rhein-Neckar OSM Treffen | Mannheim, Baden-Württemberg, Germany |
| 1st October | Auburn Red Cross Missing Maps Mapathon |
| 1st October | Angers Rencontre mensuelle OpenStreetMap | Angers, Pays de la Loire, France |
| 1st October | Rencontre mensuelle des contributeurs Paris sud | Montrouge, Ile-de-France, France |
| 2nd–4th October | Hackathon Wikimedia & OSM | Messina, Sicily, Italy |
| 2nd–4th October | FOSSGIS-OSM-Communitytreffen Nr. 26 im Linuxhotel | Essen, North Rhine-Westphalia, Germany |
| 3rd October | GeoCamp 2026 | Langreo, Asturias, Spain |
| 3rd October | OSM India - Monthly Online Mapathon | New Delhi, Delhi, India |
| 3rd October | Essen OSM-Treffen | Essen, North Rhine-Westphalia, Germany |
| 5th October | TNEI Mapathon 2026 |
| 5th October | OpenStreetMap x Wikidata Taipei #93 | Chengnei, Taipei, Taiwan |
| 6th–9th October | Open Transport Community Conference 2026 | Bern, Bern, Switzerland |
| 6th October | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 6th October | OSM Sheffield - Monthly Social | Sheffield, England, United Kingdom |
| 6th October | Mappy Hour OSM España | Madrid, Community of Madrid, Spain |
| 6th October | Braunschweiger Mappertreffen im Stratum 0 Hackerspace | Brunswick, Lower Saxony, Germany |
| 6th October | Missing Maps London Mapathon Beginner Friendly (with Training) (Online) [eng] |
| 7th October | iD Community Chat |
| 7th–8th October | Everywhere She Maps workshop 2026 | Akosua Village, Central Region, Ghana |
| 7th October | Missing Maps mapathon Žilina #24 | Žilina, Region of Žilina, Slovakia |
| 7th October | Carto party OpenStreetMap Café Crypté Liège | Liège, Liège, Belgium |
| 7th October | Stuttgarter OpenStreetMap-Treffen | Stuttgart, Baden-Württemberg, Germany |
| 7th October | Junta d'OpenStreetMap Català | Barcelona, Catalonia, Spain |
| 8th October | Missing Maps Mapathon (Beginner) - Bangkok, Thailand | Bangkok, Thailand |
| 8th October | Brussels meetup - byebye Thierry & Joost | Brussels, Belgium |
| 8th October | OSM-Treffen Bochum | Bochum, North Rhine-Westphalia, Germany |
| 9th October | OSM-Znacht in Bern | Bern, Bern, Switzerland |
| 10th October | Modifichiamo Wiki e OSM insieme! - Catania | Catania, Sicily, Italy |
| 10th October | OpenStreetMap, des cartes à la carte ! | Angers, Pays de la Loire, France |
| 11th October | OSMmapperCPH | Copenhagen, Capital Region of Denmark, Denmark |
| 11th October | OpenStreetMap, des cartes à la carte ! | Angers, Pays de la Loire, France |
| 11th October | OSM Delhi Mapping Party No.33 (East Zone) | New Delhi, India |
| 12th October | Panoramax Nederland - Online Community Meeting #1 |
| 12th October | CartONG : Mapathons en ligne 2026-2027 |
| 12th October | 2026 Autumn Maptime | Amsterdam, North Holland, Netherlands |
| 13th October | Münchner OSM-Treffen | Munich, Bavaria, Germany |
| 13th October | Hamburger Mappertreffen | Hamburg, Germany |
| 13th October | OSM-Stammtisch Ulm/Neu-Ulm | Neu-Ulm, Bavaria, Germany |
| 14th October | 🏴 North Wales Mapathon Gogledd Cymru 🏴 | Bethesda, Wales, United Kingdom |
| 14th October | Assemblea d'OpenStreetMap Català | Barcelona, Catalonia, Spain |
| 15th October | FOSS4G Belgium | Brussels, Belgium |
| 16th October | OSMF Engineering Working Group meeting |
| 17th October | Encuentro OSM Argentina 2026 | Pergamino, Buenos Aires, Argentina |
| 17th October | Atelier OpenStreetMap Metz | Metz, Grand Est, France |
| 20th October | Missing Maps London Mid-Month for Advanced Mappers (no training provided) (Online) [eng] |
| 20th October | Réunion du groupe local de Lyon | Lyon, Auvergne-Rhône-Alpes, France |
| 20th October | 205. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 20th October | OSM-Stammtisch Chemnitz | Chemnitz, Saxony, Germany |
| 20th October | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 21st October | Stammtisch Karlsruhe | Karlsruhe, Baden-Württemberg, Germany |
| 24th–25th October | OSM Hackweekend Berlin-Brandenburg 10/2026 | Berlin, Germany |
| 25th October | Mapping meetup in Uppsala | Uppsala, Sweden |
| 26th October | CartONG : Mapathons en ligne 2026-2027 |
| 26th October | Rhein-Neckar OSM Treffen | Heidelberg, Baden-Württemberg, Germany |
| 27th–29th October | State of the Map Latam 2026 | Mexico City, Mexico City, Mexico |
| 27th October | 80. Wiener OSM-Stammtisch | Vienna, Austria |
| 27th October | East Midlands pub meet-up | Derby, England, United Kingdom |
| 28th October | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 29th October | Pravidelný Missing Maps CZ-SK online Mapathon |
| 30th October | 20. Mapathon & Mapping Party Rapperswil 2026 | Rapperswil, Rapperswil-Jona, St. Gallen, Switzerland |
| 31st October | Linux Day 2026 in Pesaro | Pesaro, Marche, Italy |
| 2nd November | Stammtisch | Hanover, Lower Saxony, Germany |
| 3rd November | Missing Maps London Mapathon Beginner Friendly (with Training) (Online) [eng] |
| 5th November | Rencontre mensuelle des contributeurs Paris sud | Montrouge, Ile-de-France, France |
| 7th November | Maker Days Salzburg | Salzburg, Salzburg, Austria |
| 7th November | Mapathon @ Angera | Angera, Lombardy, Italy |
| 7th November | OSM India - Monthly Online Mapathon | New Delhi, India |
| 8th November | OSM Delhi Mapping Party No.34 (South Zone) | New Delhi, India |
| 9th November | CartONG : Mapathons en ligne 2026-2027 |
| 9th November | OpenStreetMap x Wikidata Taipei #94 | Chengnei, Taipei, Taiwan |
| 10th November | Hamburger Mappertreffen | Hamburg, Germany |
| 10th November | OSM-Stammtisch Ulm/Neu-Ulm | Neu-Ulm, Bavaria, Germany |
| 11th November | Münchner OSM-Treffen | Munich, Bavaria, Germany |
| 14th–15th November | State of the Map Kerala | Ettumanoor, Kerala, India |
| 17th November | Missing Maps London Mid-Month for Advanced Mappers (no training provided) (Online) [eng] |
| 17th November | Réunion du groupe local de Lyon | Lyon, Auvergne-Rhône-Alpes, France |
| 17th November | 206. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 17th November | OSM-Stammtisch Chemnitz | Chemnitz, Saxony, Germany |
| 17th November | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 19th November | GeoWeek Luxembourg Mapathon [FR/EN] - Hybrid |
| 21st November | Atelier OpenStreetMap Metz | Metz, Grand Est, France |
| 22nd November | 1. OSM Stammtisch Fulda | Fulda, Hesse, Germany |
| 23rd November | CartONG : Mapathons en ligne 2026-2027 |
| 24th November | OSM-Verkehrswende #80 | Berlin, Germany |
| 25th November | Rhein-Neckar OSM Treffen | Mannheim, Baden-Württemberg, Germany |
| 25th November | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 26th November | Pravidelný Missing Maps CZ-SK online Mapathon |
| 1st December | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 1st December | Missing Maps London Mapathon Beginner Friendly (with Training) (Online) [eng] |
| 3rd December | Rencontre mensuelle des contributeurs Paris sud | Montrouge, Ile-de-France, France |
| 5th December | OSM India - Monthly Online Mapathon | New Delhi, India |
| 7th December | OpenStreetMap x Wikidata Taipei #95 | Chengnei, Taipei, Taiwan |
| 8th December | Hamburger Mappertreffen | Hamburg, Germany |
| 8th December | OSM-Stammtisch Ulm/Neu-Ulm | Neu-Ulm, Bavaria, Germany |
| 9th December | 23. Österreichischer OSM-Stammtisch (online) | Stainach-Pürgg, Styria, Austria |
| 10th December | Münchner OSM-Treffen | Munich, Bavaria, Germany |
| 13th December | OSM Delhi Mapping Party No.35 (Outside Delhi) | New Delhi, India |
| 13th December | Essen OSM-Treffen | Essen, North Rhine-Westphalia, Germany |
| 14th December | CartONG : Mapathons en ligne 2026-2027 |
| 15th December | Missing Maps London Mid-Month for Advanced Mappers (no training provided) (Online) [eng] |
| 15th December | Réunion du groupe local de Lyon | Lyon, Auvergne-Rhône-Alpes, France |
| 15th December | 207. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 15th December | OSM-Stammtisch Chemnitz | Chemnitz, Saxony, Germany |
| 15th December | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 18th December | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 11th January | CartONG : Mapathons en ligne 2026-2027 |
| 25th January | CartONG : Mapathons en ligne 2026-2027 |
| 25th January | Rhein-Neckar OSM Treffen | Heidelberg, Baden-Württemberg, Germany |
| 26th January | OSM-Verkehrswende #81 | Berlin, Germany |
| 8th February | CartONG : Mapathons en ligne 2026-2027 |
| 22nd February | CartONG : Mapathons en ligne 2026-2027 |
| 8th March | CartONG : Mapathons en ligne 2026-2027 |
| 22nd March | CartONG : Mapathons en ligne 2026-2027 |
| 29th March | Rhein-Neckar OSM Treffen | Heidelberg, Baden-Württemberg, Germany |
| 12th April | CartONG : Mapathons en ligne 2026-2027 |
| 26th April | CartONG : Mapathons en ligne 2026-2027 |
| 10th May | CartONG : Mapathons en ligne 2026-2027 |
| 24th May | CartONG : Mapathons en ligne 2026-2027 |
| 31st May | Rhein-Neckar OSM Treffen | Heidelberg, Baden-Württemberg, Germany |
| 14th June | CartONG : Mapathons en ligne 2026-2027 |
| 28th June | CartONG : Mapathons en ligne 2026-2027 |
| 26th July | Rhein-Neckar OSM Treffen | Heidelberg, Baden-Württemberg, Germany |
| 27th September | Rhein-Neckar OSM Treffen | Heidelberg, Baden-Württemberg, Germany |
| 29th November | Rhein-Neckar OSM Treffen | Heidelberg, Baden-Württemberg, Germany |
Add your event to OpenStreetMap Calendar