| 3rd December | Volunteer mapping Manulife GR | Toronto, Ontario, Canada |
| 3rd December | iD Community Chat |
| 3rd December | OSM Indoor Meetup |
| 3rd December | Stuttgarter OpenStreetMap-Treffen | Stuttgart, Baden-Württemberg, Germany |
| 4th December | Réunion des contributeurs de Montrouge et du Sud de Paris | Montrouge, Ile-de-France, France |
| 5th December | UN Mappers #ValidationFriday Mappy Hour |
| 5th December | SotM CZ+SK 2025 | Olomouc, Central Moravia, Czechia |
| 6th December | State of the Map Japan 2025 | Osaka, Japan |
| 6th–7th December | PSL XXL | Paris, France |
| 6th December | Incontro dei mapper di Biellese, Vercellese e Canavese | Chiavazza, Biella, Piedmont, Italy |
| 6th December | Braunschweiger Mappertreffen im Stratum0 Hackerspace | Brunswick, Lower Saxony, Germany |
| 7th December | Kieler Radinfrastruktur mappen | Kiel, Schleswig-Holstein, Germany |
| 7th December | OSM India - Monthly Online Mapathon | New Delhi, India |
| 8th December | Missing Maps : Mapathon en ligne - CartONG [fr] |
| 8th December | Atelier de décembre 2025 du groupe local de Grenoble | Grenoble, Auvergne-Rhône-Alpes, France |
| 8th December | OpenStreetMap x Wikidata Taipei #83 | Chengnei, Taipei, Taiwan |
| 9th December | OSM Utah Monthly Map Night | Salt Lake City, Utah, United States |
| 9th December | Hamburger Mappertreffen | Hamburg, Germany |
| 10th December | Missing Maps/Maptime Amsterdam In-Person Mapathon | Amsterdam, North Holland, Netherlands |
| 11th December | Missing Maps mapathon Žilina #20 | Žilina, Region of Žilina, Slovakia |
| 11th December | OpenStreetMap Midwest Meetup | Ohio, United States |
| 11th December | Münchner OSM-Treffen | Munich, Bavaria, Germany |
| 12th December | 182. OSM-Stammtisch Zürich | Zurich, Zurich, Switzerland |
| 13th December | GeoCamp - State of the Map España 2025 | Zaragoza, Aragon, Spain |
| 13th December | OpenStreetMap Belgium at the MAP-Mercator museum | Sint-Niklaas, East Flanders, Belgium |
| 13th December | 10th OpenStreetMap West Bengal Mapping Party | Jalpaiguri, West Bengal, India |
| 14th December | OSMmapperCPH | Copenhagen, Capital Region of Denmark, Denmark |
| 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 | London xmas pub meet-up | City of Westminster, England, United Kingdom |
| 16th December | Lüneburger Mappertreffen | Lüneburg, Lower Saxony, Germany |
| 17th December | Stammtisch Karlsruhe | Karlsruhe, Baden-Württemberg, Germany |
| 17th December | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 18th December | 19. Österreichischer OSM-Stammtisch (online) | Stainach-Pürgg, Styria, Austria |
| 19th December | UN Mappers Mappy Hour |
| 19th December | Potsdamer Mappertreffen | Potsdam, Brandenburg, Germany |
| 20th December | OpenStreetMap Belgium at the MAP-Mercator museum | Sint-Niklaas, East Flanders, Belgium |
| 22nd December | Missing Maps : Mapathon en ligne - CartONG [fr] |
| 26th December | OSM-Stammtisch Hannover | Hanover, Lower Saxony, Germany |
| 27th December | OpenStreetMap Belgium at the MAP-Mercator museum | Sint-Niklaas, East Flanders, Belgium |
| 3rd January | OpenStreetMap Belgium at the MAP-Mercator museum | Sint-Niklaas, East Flanders, Belgium |
| 4th January | OSM India - Monthly Online Mapathon | New Delhi, India |
| 6th January | Missing Maps London: (Online) Mapathon [eng] |
| 8th January | OSM-Treffen in Bochum | Bochum, North Rhine-Westphalia, Germany |
| 8th January | OpenStreetMap Midwest Meetup | Ohio, United States |
| 11th January | OSMmapperCPH | Copenhagen, Capital Region of Denmark, Denmark |
| 20th January | East Midlands pub meet-up | Derby, England, United Kingdom |
| 20th January | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 20th January | East Midlands pub meet-up | Derby, England, United Kingdom |
| 24th January | State of the Map India 2026 | Nashik, Maharashtra, India |
| 27th January | Kieler Mapper*innentreffen | Kiel, Schleswig-Holstein, Germany |
| 27th January | OSM-Verkehrswende #71 | Berlin, Germany |
| 30th–31st January | Mapping USA 2026 |
| 1st February | OSM India - Monthly Online Mapathon | New Delhi, India |
| 3rd February | Missing Maps London: (Online) Mapathon [eng] |
| 17th February | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 21st–22nd February | Karlsruhe Hack Weekend February 2026 | Karlsruhe, Baden-Württemberg, Germany |
| 1st March | OSM India - Monthly Online Mapathon | New Delhi, India |
| 3rd March | Missing Maps London: (Online) Mapathon [eng] |
| 17th March | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 24th March | Rencontre OpenStreetMap et Territoires | Plouzané, Brittany, France |
| 28th–29th March | Chemnitzer Linux-Tage 2026 | Chemnitz, Saxony, Germany |
| 5th April | OSM India - Monthly Online Mapathon | New Delhi, India |
| 7th April | Missing Maps London: (Online) Mapathon [eng] |
| 21st April | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 28th April | Kieler Mapper*innentreffen | Kiel, Schleswig-Holstein, Germany |
| 30th April–3rd May | FOSSGIS-OSM-Communitytreffen im Linuxhotel | Essen, North Rhine-Westphalia, Germany |
| 3rd May | OSM India - Monthly Online Mapathon | New Delhi, India |
| 5th May | Missing Maps London: (Online) Mapathon [eng] |
| 19th May | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 2nd June | Missing Maps London: (Online) Mapathon [eng] |
| 7th June | OSM India - Monthly Online Mapathon | New Delhi, India |
| 16th June | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 26th–28th June | State of the Map Africa 2025 | Dar es-Salaam, Tanzania |
| 7th July | Missing Maps London: (Online) Mapathon [eng] |
| 21st July | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 4th August | Missing Maps London: (Online) Mapathon [eng] |
| 18th August | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 1st September | Missing Maps London: (Online) Mapathon [eng] |
| 15th September | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 6th October | Missing Maps London: (Online) Mapathon [eng] |
| 20th October | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 3rd November | Missing Maps London: (Online) Mapathon [eng] |
| 17th November | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 1st December | Missing Maps London: (Online) Mapathon [eng] |
| 15th December | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
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