| 2nd October | [Online] 🇧🇷 Oficina de mapeamento de áreas no OpenStreetMap com editor JOSM | Rio de Janeiro, Rio de Janeiro, Brazil |
| 3rd–5th October | State of the Map 2025 | Quezon City, Philippines |
| 3rd October | OSMF Engineering Working Group meeting |
| 3rd October | 17. Mapathon & Mapping Party Rapperswil 2025 | Rapperswil, Rapperswil-Jona, St. Gallen, Switzerland |
| 3rd October | Rencontre Mapadour | Bayonne, Nouvelle-Aquitaine, France |
| 3rd October | Maptime Amsterdam: Autumn mapping party | Amsterdam, North Holland, Netherlands |
| 5th October | OSM India Online (Remote) Mapping Party | New Delhi, Delhi, India |
| 7th October | Mapathon - Monthly Missing Maps w/ EWB Norway | Oslo, Norway |
| 7th October | Vortrag - Wie nutze ich OpenStreetMap - BWS Lehen-Vorstadt, Salzburg | Salzburg, Salzburg, Austria |
| 7th October | Missing Maps London: (Online) Mapathon [eng] |
| 7th October | East Midlands pub meet-up | Derby, England, United Kingdom |
| 9th October | Mappy Hour OSM España | Madrid, Community of Madrid, Spain |
| 9th October | Mapathon Bliesgau, Saarpfalz-Kreis | Homburg, Saarland, Germany |
| 9th October | OSM-Treffen in Bochum | Bochum, North Rhine-Westphalia, Germany |
| 9th October | [Online] 🇧🇷 Oficina de validação com editor JOSM | Rio de Janeiro, Rio de Janeiro, Brazil |
| 9th October | OpenStreetMap Midwest Meetup | Ohio, United States |
| 10th October | 208. OSM-Stammtisch Berlin-Brandenburg | Berlin, Germany |
| 11th October | Wikigita geologica Su e giù per l'antico Mare Padano | Castell'Arquato, Emilia-Romagna, Italy |
| 11th–12th October | OSM Hackweekend Berlin-Brandenburg 10/2025 | Berlin, Germany |
| 11th October | Cartopartie cyclable | Étalle, Luxembourg, Belgium |
| 12th October | OSMmapperCPH | Copenhagen, Capital Region of Denmark, Denmark |
| 12th October | 24th OSM Delhi MapWalk (Outer West zone) | Delhi, India |
| 13th October | Missing Maps : Mapathon en ligne - CartONG [fr] |
| 13th October | 180. OSM-Stammtisch Zürich | Zurich, Zurich, Switzerland |
| 13th October | Atelier découverte et initiation | Grenoble, Auvergne-Rhône-Alpes, France |
| 13th October | OpenStreetMap x Wikidata Taipei #81 | Chengnei, Taipei, Taiwan |
| 14th October | Münchner OSM-Treffen | Munich, Bavaria, Germany |
| 14th October | Hamburger Mappertreffen | Hamburg, Germany |
| 15th October | Stammtisch Karlsruhe | Karlsruhe, Baden-Württemberg, Germany |
| 17th–18th October | Open Transport Community Conference (ÖBB) |
| 17th–18th October | Open Transport Community Conference | Vienna, Austria |
| 18th October | OSM Mumbai MapWalk #4 | Mumbai, Maharashtra, India |
| 19th October | 25th OSM Delhi MapWalk (Meerut) | Meerut, Uttar Pradesh, India |
| 21st October | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 21st October | Réunion du groupe local de Lyon | Lyon, Auvergne-Rhône-Alpes, France |
| 21st October | 193. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 21st October | OSM Edinburgh pub meetup | City of Edinburgh, Scotland, United Kingdom |
| 21st October | Lüneburger Mappertreffen | Lüneburg, Lower Saxony, Germany |
| 22nd October | Réunion OpenStreetMap | Vandœuvre-lès-Nancy, Grand Est, France |
| 22nd October | OSM-Stammtisch Hannover | Hanover, Lower Saxony, Germany |
| 22nd October | 76. Wiener OSM-Stammtisch | Vienna, Austria |
| 25th October | OpenStreetMap al Linux Day di Bologna | Bologna, Emilia-Romagna, Italy |
| 27th October | Missing Maps : Mapathon en ligne - CartONG [fr] |
| 28th–30th October | State of the Map Nigeria 2025 Conference Enugu | Enugu State, Nigeria |
| 28th October | Kieler Mapper*innentreffen | Kiel, Schleswig-Holstein, Germany |
| 28th October | OSM Radinfra-Mapathon #4 | Vogtei, Thuringia, Germany |
| 29th October | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 4th November | Mapathon - Monthly Missing Maps w/ EWB Norway | Oslo, Norway |
| 4th November | OSM Treffen Salzburg | Salzburg, Salzburg, Austria |
| 4th November | East Midlands pub meet-up | Derby, England, United Kingdom |
| 4th November | Missing Maps London: (Online) Mapathon [eng] |
| 5th November | Stuttgarter OpenStreetMap-Treffen | Stuttgart, Baden-Württemberg, Germany |
| 7th–9th November | itWikiCon | Catania, Sicily, Italy |
| 8th–9th November | Karlsruhe Hack Weekend November 2025 | Karlsruhe, Baden-Württemberg, Germany |
| 8th November | Maker Faire Salzburg | Salzburg, Salzburg, Austria |
| 9th November | OSMmapperCPH | Copenhagen, Capital Region of Denmark, Denmark |
| 10th November | Missing Maps : Mapathon en ligne - CartONG [fr] |
| 10th November | OpenStreetMap x Wikidata Taipei #82 | Chengnei, Taipei, Taiwan |
| 11th November | 181. OSM-Stammtisch Zürich | Zurich, Zurich, Switzerland |
| 11th November | Hamburger Mappertreffen | Hamburg, Germany |
| 12th November | Münchner OSM-Treffen | Munich, Bavaria, Germany |
| 13th November | OpenStreetMap Midwest Meetup | Ohio, United States |
| 14th–15th November | State of the Map Europe | Dundee, Scotland, United Kingdom |
| 18th November | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 18th November | Réunion du groupe local de Lyon | Lyon, Auvergne-Rhône-Alpes, France |
| 18th November | 194. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 18th November | OSM Edinburgh pub meetup | City of Edinburgh, Scotland, United Kingdom |
| 18th November | Lüneburger Mappertreffen | Lüneburg, Lower Saxony, Germany |
| 24th November | Missing Maps : Mapathon en ligne - CartONG [fr] |
| 25th November | OSM-Stammtisch Hannover | Hanover, Lower Saxony, Germany |
| 25th November | OSM-Verkehrswende #70 | Berlin, Germany |
| 26th November | Réunion OpenStreetMap | Vandœuvre-lès-Nancy, Grand Est, France |
| 26th November | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 28th–30th November | State of the Map Africa 2025 | Dar es-Salaam, Tanzania |
| 2nd December | Mapathon - Monthly Missing Maps w/ EWB Norway | Oslo, Norway |
| 2nd December | OSM Treffen Salzburg | Salzburg, Salzburg, Austria |
| 2nd December | Missing Maps London: (Online) Mapathon [eng] |
| 6th–7th December | PSL XXL | Paris, France |
| 8th December | Missing Maps : Mapathon en ligne - CartONG [fr] |
| 8th December | OpenStreetMap x Wikidata Taipei #83 | Chengnei, Taipei, Taiwan |
| 9th December | Hamburger Mappertreffen | Hamburg, Germany |
| 11th December | Münchner OSM-Treffen | Munich, Bavaria, Germany |
| 11th December | OpenStreetMap Midwest Meetup | Ohio, United States |
| 13th December | GeoCamp - State of the Map España 2025 | Zaragoza, Aragon, Spain |
| 16th December | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 16th December | Réunion du groupe local de Lyon | Lyon, Auvergne-Rhône-Alpes, France |
| 16th December | 195. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 16th December | Lüneburger Mappertreffen | Lüneburg, Lower Saxony, Germany |
| 18th December | 19. Österreichischer OSM-Stammtisch (online) | Stainach-Pürgg, Styria, Austria |
| 18th December | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 22nd December | Missing Maps : Mapathon en ligne - CartONG [fr] |
| 26th December | OSM-Stammtisch Hannover | Hanover, Lower Saxony, Germany |
| 8th January | OpenStreetMap Midwest Meetup | Ohio, United States |
| 30th–31st January | Mapping USA 2026 |
| 24th March | Rencontre OpenStreetMap et Territoires | Plouzané, Brittany, France |
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