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