| 15 December | OSM-Stammtisch Hannover | Hanover, Lower Saxony, Germany |
| 16 December | OSM térképest – december | Budapest, Hungary |
| 16 December | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 16 December | Mappy Hour OSM España | Madrid, Community of Madrid, Spain |
| 16 December | Réunion du groupe local de Lyon | Lyon, Auvergne-Rhône-Alpes, France |
| 16 December | 195. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 16 December | London xmas pub meet-up | City of Westminster, England, United Kingdom |
| 16 December | Lüneburger Mappertreffen | Lüneburg, Lower Saxony, Germany |
| 17 December | Réunion du groupe local de Vienne | Saint-Romain-en-Gal, Auvergne-Rhône-Alpes, France |
| 17 December | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 17 December | Stammtisch Karlsruhe | Karlsruhe, Baden-Württemberg, Germany |
| 18 December | 19. Österreichischer OSM-Stammtisch (online) | Stainach-Pürgg, Styria, Austria |
| 19 December | UN Mappers Mappy Hour |
| 19 December | OSM World Mappy Hour |
| 19 December | Potsdamer Mappertreffen | Potsdam, Brandenburg, Germany |
| 20 December | OSM Bengaluru Mapping Party | Bengaluru, Karnataka, India |
| 20 December | OpenStreetMap Belgium at the MAP-Mercator museum | Sint-Niklaas, East Flanders, Belgium |
| 20 December | Indoor Mapping Party @ TomTom Pune | Pune, Maharashtra, India |
| 21 December | Jahresabschlussmapping | Fulda, Hesse, Germany |
| 22 December | Missing Maps : Mapathon en ligne - CartONG [fr] |
| 27 December | OpenStreetMap Belgium at the MAP-Mercator museum | Sint-Niklaas, East Flanders, Belgium |
| 28 December | OSM India×TomTom Online Mapathon | New Delhi, India |
| 3 January | OpenStreetMap Belgium at the MAP-Mercator museum | Sint-Niklaas, East Flanders, Belgium |
| 3 January | Braunschweiger Mappertreffen im Stratum0 Hackerspace | Brunswick, Lower Saxony, Germany |
| 4 January | OSM India - Monthly Online Mapathon | New Delhi, India |
| 6 January | Missing Maps London: (Online) Mapathon [eng] |
| 7 January | iD Community Chat |
| 7 January | Stuttgarter OpenStreetMap-Treffen | Stuttgart, Baden-Württemberg, Germany |
| 8 January | OpenStreetMap Midwest Meetup | Ohio, United States |
| 8 January | OSM-Stammisch Dresden | Dresden, Saxony, Germany |
| 8 January | OSM-Treffen in Bochum | Bochum, North Rhine-Westphalia, Germany |
| 9 January | OSMF Engineering Working Group meeting |
| 11 January | OSMmapperCPH | Copenhagen, Capital Region of Denmark, Denmark |
| 20 January | East Midlands pub meet-up | Derby, England, United Kingdom |
| 20 January | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 20 January | East Midlands pub meet-up | Derby, England, United Kingdom |
| 24 January | State of the Map India 2026 | Nashik, Maharashtra, India |
| 27 January | Kieler Mapper*innentreffen | Kiel, Schleswig-Holstein, Germany |
| 27 January | OSM-Verkehrswende #71 | Berlin, Germany |
| 30–31 January | Mapping USA 2026 |
| 1 February | OSM India - Monthly Online Mapathon | New Delhi, India |
| 3 February | Missing Maps London: (Online) Mapathon [eng] |
| 5 February | OSM-Treffen Freiburg/Brsg. | Freiburg im Breisgau, Baden-Württemberg, Germany |
| 7 February | Braunschweiger Mappertreffen im Stratum0 Hackerspace | Brunswick, Lower Saxony, Germany |
| 11 February | Online Mapathon von ÄRZTE OHNE GRENZEN |
| 17 February | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 21–22 February | Karlsruhe Hack Weekend February 2026 | Karlsruhe, Baden-Württemberg, Germany |
| 1 March | OSM India - Monthly Online Mapathon | New Delhi, India |
| 3 March | Missing Maps London: (Online) Mapathon [eng] |
| 17 March | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 24 March | Rencontre OpenStreetMap et Territoires | Plouzané, Brittany, France |
| 28–29 March | Chemnitzer Linux-Tage 2026 | Chemnitz, Saxony, Germany |
| 5 April | OSM India - Monthly Online Mapathon | New Delhi, India |
| 7 April | Missing Maps London: (Online) Mapathon [eng] |
| 21 April | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 28 April | Kieler Mapper*innentreffen | Kiel, Schleswig-Holstein, Germany |
| 30 April–3 May | FOSSGIS-OSM-Communitytreffen im Linuxhotel | Essen, North Rhine-Westphalia, Germany |
| 3 May | OSM India - Monthly Online Mapathon | New Delhi, India |
| 5 May | Missing Maps London: (Online) Mapathon [eng] |
| 19 May | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 2 June | Missing Maps London: (Online) Mapathon [eng] |
| 7 June | OSM India - Monthly Online Mapathon | New Delhi, India |
| 16 June | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 26–28 June | State of the Map Africa 2025 | Dar es-Salaam, Tanzania |
| 7 July | Missing Maps London: (Online) Mapathon [eng] |
| 21 July | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 4 August | Missing Maps London: (Online) Mapathon [eng] |
| 18 August | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 1 September | Missing Maps London: (Online) Mapathon [eng] |
| 15 September | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 6 October | Missing Maps London: (Online) Mapathon [eng] |
| 20 October | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 3 November | Missing Maps London: (Online) Mapathon [eng] |
| 17 November | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 1 December | Missing Maps London: (Online) Mapathon [eng] |
| 15 December | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
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