| 1 Meurzh | OSM Lucknow Mapping Party | Lucknow, Uttar Pradesh, India |
| 1 Meurzh | OSM India - Monthly Online Mapathon | New Delhi, India |
| 1 Meurzh | OSM Mapping Party @ Madurai | Madurai, Tamil Nadu, India |
| 3 Meurzh | PoliMappers Maptedì | Milan, Lombardy, Italy |
| 3 Meurzh | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 3 Meurzh | Rencontre OpenStreetMap à Lille | Lille, Hauts-de-France, France |
| 3 Meurzh | Mappy Hour OSM España | Galicia, Spain |
| 3 Meurzh | Missing Maps London: (Online) Mapathon [eng] |
| 4 Meurzh | iD Community Chat |
| 4 Meurzh | Kvartální OSM pivo | Brno, South Moravian Region, Czechia |
| 4 Meurzh | OSM Indoor Meetup |
| 4 Meurzh | Stuttgarter OpenStreetMap-Treffen | Stuttgart, Baden-Württemberg, Germany |
| 4 Meurzh | Harzer OSM-Stammtisch |
| 4 Meurzh | OpenHistoricalMap in North America | California, United States |
| 4 Meurzh | OSM US Mappy Hour: OpenHistoricalMap in North America |
| 5 Meurzh | 3. Open Data Day Flensburg | Flensburg, Schleswig-Holstein, Germany |
| 5 Meurzh | Missing Maps mapathon Žilina #21 | Žilina, Region of Žilina, Slovakia |
| 5 Meurzh | Réunion des contributeurs de Montrouge et du Sud de Paris | Montrouge, Ile-de-France, France |
| 6–7 Meurzh | FOSS4G:BG Open GIS Conference 2026 | Sofia, Sofia-City, Bulgaria |
| 6 Meurzh | OSMF Engineering Working Group meeting |
| 6 Meurzh | OpenStreetMap meetup in Gent - Pre-VLA-congres editie | Ghent, East Flanders, Belgium |
| 7 Meurzh | Vereniging Leraars Aardrijkskunde (VLA) conference 2026 | Sint-Niklaas, East Flanders, Belgium |
| 7 Meurzh | Social Mapping Sunday: Moort-ak Waadiny / Wellington Square Perth | Perth, Western Australia, Australia |
| 8 Meurzh | Social Mapping Sunday: Moort-ak Waadiny / Wellington Square Perth | Perth, Western Australia, Australia |
| 8 Meurzh | OSM Delhi Mapping Party No.27 (East Zone) | Delhi, India |
| 8 Meurzh | OSMmapperCPH | Copenhagen, Capital Region of Denmark, Denmark |
| 9 Meurzh | Friends of MSF UWO Mapathon | London, Ontario, Canada |
| 9 Meurzh | Březnový brněnský Missing Maps Mapathon na Geografickém ústavu | Brno, South Moravian Region, Czechia |
| 9 Meurzh | Missing Maps : Mapathon en ligne - CartONG [fr] |
| 9 Meurzh | OpenStreetMap x Wikidata Taipei #86 | Chengnei, Taipei, Taiwan |
| 10 Meurzh | Hamburger Mappertreffen | Hamburg, Germany |
| 11 Meurzh | Logitech Missing Maps - Office Mapathon | Cork, Ireland |
| 11 Meurzh | The GAIN Mapathon | George Mason, Virginia, United States |
| 11 Meurzh | 185. OSM-Stammtisch Zürich | Zurich, Zurich, Switzerland |
| 11 Meurzh | Missing Maps Zürich Mapathon | Zurich, Zurich, Switzerland |
| 12 Meurzh | Münchner OSM-Treffen | Munich, Bavaria, Germany |
| 14 Meurzh | Camera's in kaart brengen | Leuven, Flemish Brabant, Belgium |
| 17 Meurzh | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 17 Meurzh | Réunion du groupe local de Lyon | Lyon, Auvergne-Rhône-Alpes, France |
| 17 Meurzh | 198. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 17 Meurzh | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 18 Meurzh | Online Mapathon - Ärzte ohne Grenzen |
| 18 Meurzh | 20. Österreichischer OSM-Stammtisch (online) | Stainach-Pürgg, Styria, Austria |
| 19 Meurzh | Rhein-Neckar OSM Treffen // Intro iD-Editor | Heidelberg, Baden-Württemberg, Germany |
| 21 Meurzh | Missing Maps Day Olomouc 2026 | Olomouc, Olomouc Region, Czechia |
| 21 Meurzh | OSM Mumbai Mapping Party No.8 (Western Line - North) | Vasai-Virar, Maharashtra, India |
| 22 Meurzh | Frühlingsmapping 2026 | Fulda, Hesse, Germany |
| 23 Meurzh | Missing Maps : Mapathon en ligne - CartONG [fr] |
| 24 Meurzh | Rencontre OpenStreetMap et Territoires | Plouzané, Brittany, France |
| 24–27 Meurzh | FOSSGIS-Konferenz 2026 | Göttingen, Lower Saxony, Germany |
| 24 Meurzh | East Midlands pub meet-up | Derby, England, United Kingdom |
| 27 Meurzh | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 28–29 Meurzh | Chemnitzer Linux-Tage 2026 | Chemnitz, Saxony, Germany |
| 28 Meurzh | FOSSGIS 2026 - OSM-Samstag | Göttingen, Lower Saxony, Germany |
| 28 Meurzh | Local Chapters & Communities Congress 2026 |
| 30 Meurzh | OSM-Stammtisch Hannover | Hanover, Lower Saxony, Germany |
| 5 Ebrel | OSM India - Monthly Online Mapathon | New Delhi, India |
| 7 Ebrel | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 7 Ebrel | Missing Maps London: (Online) Mapathon [eng] |
| 8 Ebrel | Essen OSM-Treffen | Essen, North Rhine-Westphalia, Germany |
| 11–12 Ebrel | OSM Hackweekend Berlin-Brandenburg 04/2026 | Berlin, Germany |
| 12 Ebrel | OSM Delhi Mapping Party No.28 (Meerut) | Meerut, Uttar Pradesh, India |
| 12 Ebrel | OSMmapperCPH | Copenhagen, Capital Region of Denmark, Denmark |
| 13 Ebrel | Missing Maps : Mapathon en ligne - CartONG [fr] |
| 13 Ebrel | OpenStreetMap x Wikidata Taipei #87 | Chengnei, Taipei, Taiwan |
| 14 Ebrel | Münchner OSM-Treffen | Munich, Bavaria, Germany |
| 16 Ebrel | OSM-Treffen Freiburg/Brsg. | Freiburg im Breisgau, Baden-Württemberg, Germany |
| 18 Ebrel | OSM Mumbai Mapping Party No.9 (Central Line) | Mumbai, Maharashtra, India |
| 19 Ebrel | Mapping Party @ Chennai | Chennai, Tamil Nadu, India |
| 21 Ebrel | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 21 Ebrel | Réunion du groupe local de Lyon | Lyon, Auvergne-Rhône-Alpes, France |
| 21 Ebrel | East Midlands pub meet-up | Derby, England, United Kingdom |
| 21 Ebrel | 199. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 21 Ebrel | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 24 Ebrel | 18. Mapathon & Mapping Party Rapperswil 2025 | Rapperswil, Rapperswil-Jona, St. Gallen, Switzerland |
| 27 Ebrel | Missing Maps : Mapathon en ligne - CartONG [fr] |
| 28 Ebrel | Kieler Mapper*innentreffen | Kiel, Schleswig-Holstein, Germany |
| 28 Ebrel | 78. Wiener OSM-Stammtisch | Vienna, Austria |
| 29 Ebrel | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 30 Ebrel–3 Mae | FOSSGIS-OSM-Communitytreffen im Linuxhotel | Essen, North Rhine-Westphalia, Germany |
| 1 Mae | MA1PING | Stuttgart, Baden-Württemberg, Germany |
| 3 Mae | OSM India - Monthly Online Mapathon | New Delhi, India |
| 5 Mae | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 5 Mae | Missing Maps London: (Online) Mapathon [eng] |
| 8 Mae | SOSM Association Annual Meeting | Bergdietikon, Aargau, Switzerland |
| 10 Mae | OSM Delhi Mapping Party No.29 (South Zone) | Delhi, India |
| 11 Mae | Missing Maps : Mapathon en ligne - CartONG [fr] |
| 11 Mae | OpenStreetMap x Wikidata Taipei #88 | Chengnei, Taipei, Taiwan |
| 13 Mae | Münchner OSM-Treffen | Munich, Bavaria, Germany |
| 16 Mae | OSM Mumbai Mapping Party No.10 (Trans-Harbour Line - North) | Navi Mumbai, Maharashtra, India |
| 19 Mae | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 19 Mae | Réunion du groupe local de Lyon | Lyon, Auvergne-Rhône-Alpes, France |
| 19 Mae | 200. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 19 Mae | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 25 Mae | Missing Maps : Mapathon en ligne - CartONG [fr] |
| 27 Mae | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 2 Mezheven | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 2 Mezheven | Missing Maps London: (Online) Mapathon [eng] |
| 7 Mezheven | OSM India - Monthly Online Mapathon | New Delhi, India |
| 8 Mezheven | Missing Maps : Mapathon en ligne - CartONG [fr] |
| 8 Mezheven | OpenStreetMap x Wikidata Taipei #89 | Chengnei, Taipei, Taiwan |
| 11 Mezheven | Münchner OSM-Treffen | Munich, Bavaria, Germany |
| 14 Mezheven | OSM Delhi Mapping Party No.30 (West Zone) | Delhi, India |
| 16 Mezheven | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 16 Mezheven | Réunion du groupe local de Lyon | Lyon, Auvergne-Rhône-Alpes, France |
| 16 Mezheven | 201. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 16 Mezheven | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 17 Mezheven | 21. Österreichischer OSM-Stammtisch (online) | Stainach-Pürgg, Styria, Austria |
| 18 Mezheven | Essen OSM-Treffen | Essen, North Rhine-Westphalia, Germany |
| 20 Mezheven | OSM Mumbai Mapping Party No.11 (Trans-Harbour Line - South) | Maharashtra, India |
| 22 Mezheven | Missing Maps : Mapathon en ligne - CartONG [fr] |
| 26–28 Mezheven | State of the Map Africa 2025 | Dar es-Salaam, Tanzania |
| 26 Mezheven | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 7 Gouere | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 7 Gouere | Missing Maps London: (Online) Mapathon [eng] |
| 13 Gouere | OpenStreetMap x Wikidata Taipei #90 | Chengnei, Taipei, Taiwan |
| 21 Gouere | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 21 Gouere | 202. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 21 Gouere | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 29 Gouere | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 4 Eost | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 4 Eost | Missing Maps London: (Online) Mapathon [eng] |
| 10 Eost | OpenStreetMap x Wikidata Taipei #91 | Chengnei, Taipei, Taiwan |
| 18 Eost | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 18 Eost | 203. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 18 Eost | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 26 Eost | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 26 Eost | 79. Wiener OSM-Stammtisch | Vienna, Austria |
| 27 Eost | OpenStreetMap West Bengal Mapping Party + AnkushTheHero Day |
| 28–30 Eost | State of the Map - Paris | Champs-sur-Marne, Ile-de-France, France |
| 28 Eost | Essen OSM-Treffen | Essen, North Rhine-Westphalia, Germany |
| 1 Gwengolo | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 1 Gwengolo | Missing Maps London: (Online) Mapathon [eng] |
| 7 Gwengolo | OpenStreetMap x Wikidata Taipei #92 | Chengnei, Taipei, Taiwan |
| 15 Gwengolo | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 15 Gwengolo | 22. Österreichischer OSM-Stammtisch (online) | Stainach-Pürgg, Styria, Austria |
| 15 Gwengolo | 204. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 15 Gwengolo | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 25 Gwengolo | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 3 Here | Essen OSM-Treffen | Essen, North Rhine-Westphalia, Germany |
| 5 Here | OpenStreetMap x Wikidata Taipei #93 | Chengnei, Taipei, Taiwan |
| 6 Here | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 6 Here | Missing Maps London: (Online) Mapathon [eng] |
| 20 Here | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 20 Here | 205. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 20 Here | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 27 Here | 80. Wiener OSM-Stammtisch | Vienna, Austria |
| 28 Here | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 3 Du | Missing Maps London: (Online) Mapathon [eng] |
| 7 Du | Maker Days Salzburg | Salzburg, Salzburg, Austria |
| 9 Du | OpenStreetMap x Wikidata Taipei #94 | Chengnei, Taipei, Taiwan |
| 17 Du | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 17 Du | 206. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 17 Du | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 25 Du | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 1 Kerzu | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 1 Kerzu | Missing Maps London: (Online) Mapathon [eng] |
| 7 Kerzu | OpenStreetMap x Wikidata Taipei #95 | Chengnei, Taipei, Taiwan |
| 9 Kerzu | 23. Österreichischer OSM-Stammtisch (online) | Stainach-Pürgg, Styria, Austria |
| 13 Kerzu | Essen OSM-Treffen | Essen, North Rhine-Westphalia, Germany |
| 15 Kerzu | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 15 Kerzu | 207. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 15 Kerzu | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 18 Kerzu | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
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