| 12–13 märts | March Missing Maps Mapathon |
| 13 märts | OSM-Tools: Wenn die Welt zur Spielwiese wird | Fulda, Hesse, Germany |
| 14 märts | Camera's in kaart brengen | Leuven, Flemish Brabant, Belgium |
| 17 märts | A Mapathon to enrich participatory mapping of short supply chains around the Tokikoa label in the Basque Country | Tardets-Sorholus, Nouvelle-Aquitaine, France |
| 17 märts | Mappy Hour OSM España | Zaragoza, Aragon, Spain |
| 17 märts | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 17 märts | Réunion du groupe local de Lyon | Lyon, Auvergne-Rhône-Alpes, France |
| 17 märts | 198. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 17 märts | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 18 märts | Rencontre des contributeurs de Vienne (38) | Vienne, Auvergne-Rhône-Alpes, France |
| 18 märts | 20. Österreichischer OSM-Stammtisch (online) | Stainach-Pürgg, Styria, Austria |
| 18 märts | Online Mapathon - Ärzte ohne Grenzen |
| 19 märts | Camera's in kaart brengen | Ghent, East Flanders, Belgium |
| 19 märts | Rhein-Neckar OSM Treffen // Intro iD-Editor | Heidelberg, Baden-Württemberg, Germany |
| 20 märts | OSMF Engineering Working Group meeting |
| 21 märts | Missing Maps Day Olomouc 2026 | Olomouc, Olomouc Region, Czechia |
| 22 märts | Frühlingsmapping 2026 | Fulda, Hesse, Germany |
| 23 märts | Missing Maps : Mapathon en ligne - CartONG [fr] |
| 23 märts | Bremer Mappertreffen | Bremen, Bremen, Germany |
| 24 märts | Rencontre OpenStreetMap et Territoires | Plouzané, Brittany, France |
| 24–27 märts | FOSSGIS-Konferenz 2026 | Göttingen, Lower Saxony, Germany |
| 24 märts | East Midlands pub meet-up | Derby, England, United Kingdom |
| 27 märts | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 28–29 märts | Chemnitzer Linux-Tage 2026 | Chemnitz, Saxony, Germany |
| 28 märts | FOSSGIS 2026 - OSM-Samstag | Göttingen, Lower Saxony, Germany |
| 28 märts | Local Chapters & Communities Congress 2026 |
| 28 märts | rencontre OSM | Saint-Brieuc, Brittany, France |
| 28 märts | OSM Mumbai Mapping Party No.8 (Western Line - North) | Mira-Bhayander, Maharashtra, India |
| 30 märts | OSM-Stammtisch Hannover | Hanover, Lower Saxony, Germany |
| 1 aprill | Stuttgarter OpenStreetMap-Treffen | Stuttgart, Baden-Württemberg, Germany |
| 2 aprill | Réunion des contributeurs de Montrouge et du Sud de Paris | Montrouge, Ile-de-France, France |
| 5 aprill | OSM India - Monthly Online Mapathon | New Delhi, India |
| 7 aprill | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 7 aprill | Missing Maps London: (Online) Mapathon [eng] |
| 8 aprill | Essen OSM-Treffen | Essen, North Rhine-Westphalia, Germany |
| 10 aprill | 186. OSM-Stammtisch Zürich | Zurich, Zurich, Switzerland |
| 11–12 aprill | OSM Hackweekend Berlin-Brandenburg 04/2026 | Berlin, Germany |
| 12 aprill | Editathon e mapathon alla Milano Marathon 2026 | Milan, Lombardy, Italy |
| 12 aprill | OSM Delhi Mapping Party No.28 (Meerut) | Meerut, Uttar Pradesh, India |
| 12 aprill | OSMmapperCPH | Copenhagen, Capital Region of Denmark, Denmark |
| 13 aprill | Missing Maps : Mapathon en ligne - CartONG [fr] |
| 13 aprill | OpenStreetMap x Wikidata Taipei #87 | Chengnei, Taipei, Taiwan |
| 14 aprill | Münchner OSM-Treffen | Munich, Bavaria, Germany |
| 16 aprill | OSM-Treffen Freiburg/Brsg. | Freiburg im Breisgau, Baden-Württemberg, Germany |
| 18 aprill | OSM Mumbai Mapping Party No.9 (Central Line) | Mumbai, Maharashtra, India |
| 19 aprill | Mapping Party @ Chennai | Chennai, Tamil Nadu, India |
| 21 aprill | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 21 aprill | Réunion du groupe local de Lyon | Lyon, Auvergne-Rhône-Alpes, France |
| 21 aprill | East Midlands pub meet-up | Derby, England, United Kingdom |
| 21 aprill | 199. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 21 aprill | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 23 aprill | Capital One TPM Summit Global Mapathon! | Richmond, Virginia, United States |
| 24 aprill | 18. Mapathon & Mapping Party Rapperswil 2026 | Rapperswil, Rapperswil-Jona, St. Gallen, Switzerland |
| 27 aprill | Missing Maps : Mapathon en ligne - CartONG [fr] |
| 28 aprill | Kieler Mapper*innentreffen | Kiel, Schleswig-Holstein, Germany |
| 28 aprill | 78. Wiener OSM-Stammtisch | Vienna, Austria |
| 29 aprill | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 30 aprill–3 mai | FOSSGIS-OSM-Communitytreffen im Linuxhotel | Essen, North Rhine-Westphalia, Germany |
| 1 mai | MA1PING | Stuttgart, Baden-Württemberg, Germany |
| 3 mai | OSM India - Monthly Online Mapathon | New Delhi, India |
| 5 mai | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 5 mai | Missing Maps London: (Online) Mapathon [eng] |
| 8 mai | SOSM Association Annual Meeting | Bergdietikon, Aargau, Switzerland |
| 10 mai | OSM Delhi Mapping Party No.29 (South Zone) | Delhi, India |
| 11 mai | Missing Maps : Mapathon en ligne - CartONG [fr] |
| 11 mai | OpenStreetMap x Wikidata Taipei #88 | Chengnei, Taipei, Taiwan |
| 13 mai | Münchner OSM-Treffen | Munich, Bavaria, Germany |
| 16 mai | OSM Mumbai Mapping Party No.10 (Trans-Harbour Line - North) | Navi Mumbai, Maharashtra, India |
| 19 mai | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 19 mai | Réunion du groupe local de Lyon | Lyon, Auvergne-Rhône-Alpes, France |
| 19 mai | 200. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 19 mai | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 25 mai | Missing Maps : Mapathon en ligne - CartONG [fr] |
| 27 mai | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 2 juuni | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 2 juuni | Missing Maps London: (Online) Mapathon [eng] |
| 7 juuni | OSM India - Monthly Online Mapathon | New Delhi, India |
| 8 juuni | Missing Maps : Mapathon en ligne - CartONG [fr] |
| 8 juuni | OpenStreetMap x Wikidata Taipei #89 | Chengnei, Taipei, Taiwan |
| 11 juuni | Münchner OSM-Treffen | Munich, Bavaria, Germany |
| 14 juuni | OSM Delhi Mapping Party No.30 (West Zone) | Delhi, India |
| 16 juuni | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 16 juuni | Réunion du groupe local de Lyon | Lyon, Auvergne-Rhône-Alpes, France |
| 16 juuni | 201. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 16 juuni | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 17 juuni | 21. Österreichischer OSM-Stammtisch (online) | Stainach-Pürgg, Styria, Austria |
| 18 juuni | Essen OSM-Treffen | Essen, North Rhine-Westphalia, Germany |
| 20 juuni | OSM Mumbai Mapping Party No.11 (Trans-Harbour Line - South) | Maharashtra, India |
| 22 juuni | Missing Maps : Mapathon en ligne - CartONG [fr] |
| 26–28 juuni | State of the Map Africa 2025 | Dar es-Salaam, Tanzania |
| 26 juuni | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 7 juuli | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 7 juuli | Missing Maps London: (Online) Mapathon [eng] |
| 13 juuli | OpenStreetMap x Wikidata Taipei #90 | Chengnei, Taipei, Taiwan |
| 21 juuli | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 21 juuli | 202. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 21 juuli | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 29 juuli | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 4 august | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 4 august | Missing Maps London: (Online) Mapathon [eng] |
| 10 august | OpenStreetMap x Wikidata Taipei #91 | Chengnei, Taipei, Taiwan |
| 18 august | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 18 august | 203. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 18 august | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 26 august | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 26 august | 79. Wiener OSM-Stammtisch | Vienna, Austria |
| 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 |
| 1 september | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 1 september | Missing Maps London: (Online) Mapathon [eng] |
| 7 september | OpenStreetMap x Wikidata Taipei #92 | Chengnei, Taipei, Taiwan |
| 15 september | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 15 september | 22. Österreichischer OSM-Stammtisch (online) | Stainach-Pürgg, Styria, Austria |
| 15 september | 204. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 15 september | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 25 september | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 3 oktoober | Essen OSM-Treffen | Essen, North Rhine-Westphalia, Germany |
| 5 oktoober | OpenStreetMap x Wikidata Taipei #93 | Chengnei, Taipei, Taiwan |
| 6 oktoober | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 6 oktoober | Missing Maps London: (Online) Mapathon [eng] |
| 20 oktoober | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 20 oktoober | 205. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 20 oktoober | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 27–29 oktoober | State of the Map LATAM in Mexico City | Mexico City, Mexico City, Mexico |
| 27 oktoober | 80. Wiener OSM-Stammtisch | Vienna, Austria |
| 28 oktoober | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 3 november | Missing Maps London: (Online) Mapathon [eng] |
| 7 november | Maker Days Salzburg | Salzburg, Salzburg, Austria |
| 9 november | OpenStreetMap x Wikidata Taipei #94 | Chengnei, Taipei, Taiwan |
| 17 november | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 17 november | 206. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 17 november | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 25 november | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 1 detsember | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 1 detsember | Missing Maps London: (Online) Mapathon [eng] |
| 7 detsember | OpenStreetMap x Wikidata Taipei #95 | Chengnei, Taipei, Taiwan |
| 9 detsember | 23. Österreichischer OSM-Stammtisch (online) | Stainach-Pürgg, Styria, Austria |
| 13 detsember | Essen OSM-Treffen | Essen, North Rhine-Westphalia, Germany |
| 15 detsember | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 15 detsember | 207. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 15 detsember | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 18 detsember | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
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