| 4 آوریل | OSM India - Monthly Online Mapathon | New Delhi, India |
| 4 آوریل | A Synesthete's Atlas: Cartographic Improvisations between Eric Theise, Jeffrey Gordon Evans, Hannah Joyce, and Steev Hise | Tucson, Arizona, United States |
| 5 آوریل | OSM Lucknow Mapping Party No.3 | Lucknow, Uttar Pradesh, India |
| 7 آوریل | Mapatón humanitario | Zaragoza, Aragon, Spain |
| 7 آوریل | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 7 آوریل | Missing Maps London: (Online) Mapathon [eng] |
| 7 آوریل | Easter 2026 Map n Chat | Dublin, Ireland |
| 8 آوریل | iD Community Chat |
| 8 آوریل | Essen OSM-Treffen | Essen, North Rhine-Westphalia, Germany |
| 9 آوریل | A Synesthete's Atlas: Cartographic Improvisations between Eric Theise, Kenneth Cornell, and Clifford Grindstaff | Albuquerque, New Mexico, United States |
| 10 آوریل | 214. OSM-Stammtisch Berlin-Brandenburg | Berlin, Germany |
| 10 آوریل | 186. OSM-Stammtisch Zürich | Zurich, Zurich, Switzerland |
| 10 آوریل | MSF-CARTONG: Nuit de la Géographie | Paris, Ile-de-France, France |
| 11–12 آوریل | OSM Hackweekend Berlin-Brandenburg 04/2026 | Berlin, Germany |
| 11 آوریل | Braunschweiger Mappertreffen im Stratum 0 Hackerspace | Brunswick, Lower Saxony, Germany |
| 12 آوریل | Social Mapping Sunday: Armadale Train Station | Armadale, Western Australia, Australia |
| 12 آوریل | Editathon e mapathon alla Milano Marathon 2026 | Milan, Lombardy, Italy |
| 12 آوریل | Camera's in kaart brengen | Antwerp, Antwerp, Belgium |
| 12 آوریل | OSMmapperCPH | Copenhagen, Capital Region of Denmark, Denmark |
| 12 آوریل | OSM Delhi Mapping Party No.28 (Meerut) | Meerut, Uttar Pradesh, India |
| 13 آوریل | Missing Maps : Mapathon en ligne - CartONG [fr] |
| 13 آوریل | OpenStreetMap x Wikidata Taipei #87 | Chengnei, Taipei, Taiwan |
| 14 آوریل | Münchner OSM-Treffen | Munich, Bavaria, Germany |
| 15 آوریل | Cartopartie à Oloron-Sainte-Marie - Projet SYSTOUR | Oloron-Sainte-Marie, Nouvelle-Aquitaine, France |
| 15 آوریل | Une cartopartie dédiée à la mobilité durable dans les Montagnes Béarnaises | Oloron-Sainte-Marie, Nouvelle-Aquitaine, France |
| 15 آوریل | Rencontre des contributeurs de Vienne (38) | Vienne, Auvergne-Rhône-Alpes, France |
| 15 آوریل | Online Mapathon von ÄRZTE OHNE GRENZEN |
| 15 آوریل | Stammtisch Karlsruhe | Karlsruhe, Baden-Württemberg, Germany |
| 16 آوریل | OSM-Treffen Freiburg/Brsg. | Freiburg im Breisgau, Baden-Württemberg, Germany |
| 18 آوریل | Mapping Day ad Empoli | Avane, Empoli, Tuscany, Italy |
| 18 آوریل | OSM-TR Meet-Up - OSM League Pit-Stop | Kadıköy, Turkey |
| 19 آوریل | Mapping Party @ Chennai | Chennai, Tamil Nadu, India |
| 21 آوریل | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 21 آوریل | Réunion du groupe local de Lyon | Lyon, Auvergne-Rhône-Alpes, France |
| 21 آوریل | East Midlands pub meet-up | Derby, England, United Kingdom |
| 21 آوریل | 199. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 21 آوریل | London pub meet-up | City of London, England, United Kingdom |
| 21 آوریل | OSM-Stammtisch Chemnitz | Chemnitz, Saxony, Germany |
| 21 آوریل | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 23 آوریل | Capital One TPM Summit Global Mapathon | Richmond, Virginia, United States |
| 23 آوریل | Missing Maps mapathon Bratislava #13 | Bratislava, Region of Bratislava, Slovakia |
| 23 آوریل | Modifichiamo Wiki e OSM insieme! | Catania, Sicily, Italy |
| 24 آوریل | 18. Mapathon & Mapping Party Rapperswil 2026 | Rapperswil, Rapperswil-Jona, St. Gallen, Switzerland |
| 25 آوریل | OSM Mumbai Mapping Party No.9 (Central Line) | Mumbai, Maharashtra, India |
| 27 آوریل | Dubnový Missing Maps mapathon na Ústavu botaniky a zoologie | Brno, South Moravian Region, Czechia |
| 27 آوریل | Missing Maps : Mapathon en ligne - CartONG [fr] |
| 28 آوریل | Kieler Mapper*innentreffen | Kiel, Schleswig-Holstein, Germany |
| 28 آوریل | 78. Wiener OSM-Stammtisch | Vienna, Austria |
| 28 آوریل | OSM-Verkehrswende #72 | Berlin, Germany |
| 29 آوریل | OSM-Stammtisch Hannover | Hanover, Lower Saxony, Germany |
| 29 آوریل | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 30 آوریل–3 مه | FOSSGIS-OSM-Communitytreffen im Linuxhotel | Essen, North Rhine-Westphalia, Germany |
| 1 مه | MA1PING | Stuttgart, Baden-Württemberg, Germany |
| 2 مه | Braunschweiger Mappertreffen im Stratum 0 Hackerspace | Brunswick, Lower Saxony, Germany |
| 3 مه | OSM India - Monthly Online Mapathon | New Delhi, India |
| 5 مه | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 5 مه | Missing Maps London: (Online) Mapathon [eng] |
| 8 مه | SOSM Association Annual Meeting | Bergdietikon, Aargau, Switzerland |
| 10 مه | OSMmapperCPH | Copenhagen, Capital Region of Denmark, Denmark |
| 10 مه | OSM Delhi Mapping Party No.29 (South Zone) | Delhi, India |
| 11 مه | Missing Maps : Mapathon en ligne - CartONG [fr] |
| 11 مه | OpenStreetMap x Wikidata Taipei #88 | Chengnei, Taipei, Taiwan |
| 13 مه | Münchner OSM-Treffen | Munich, Bavaria, Germany |
| 16 مه | OSM Mumbai Mapping Party No.10 (Trans-Harbour Line - North) | Navi Mumbai, Maharashtra, India |
| 19 مه | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 19 مه | Réunion du groupe local de Lyon | Lyon, Auvergne-Rhône-Alpes, France |
| 19 مه | 200. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 19 مه | OSM-Stammtisch Chemnitz | Chemnitz, Saxony, Germany |
| 19 مه | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 25 مه | Missing Maps : Mapathon en ligne - CartONG [fr] |
| 27 مه | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 2 ژوئن | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 2 ژوئن | Missing Maps London: (Online) Mapathon [eng] |
| 6 ژوئن | Braunschweiger Mappertreffen im Stratum 0 Hackerspace | Brunswick, Lower Saxony, Germany |
| 7 ژوئن | OSM India - Monthly Online Mapathon | New Delhi, India |
| 8 ژوئن | Missing Maps : Mapathon en ligne - CartONG [fr] |
| 8 ژوئن | OpenStreetMap x Wikidata Taipei #89 | Chengnei, Taipei, Taiwan |
| 11–13 ژوئن | State of the Map US 2026 | Madison, Wisconsin, United States |
| 11 ژوئن | Münchner OSM-Treffen | Munich, Bavaria, Germany |
| 14 ژوئن | OSM Delhi Mapping Party No.30 (West Zone) | Delhi, India |
| 16 ژوئن | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 16 ژوئن | Réunion du groupe local de Lyon | Lyon, Auvergne-Rhône-Alpes, France |
| 16 ژوئن | OSM-Stammtisch Chemnitz | Chemnitz, Saxony, Germany |
| 16 ژوئن | 201. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 16 ژوئن | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 17 ژوئن | 21. Österreichischer OSM-Stammtisch (online) | Stainach-Pürgg, Styria, Austria |
| 18 ژوئن | Essen OSM-Treffen | Essen, North Rhine-Westphalia, Germany |
| 19 ژوئن | Missing Maps Mapathon in Stuttgart | Stuttgart, Baden-Württemberg, Germany |
| 20 ژوئن | OSM Mumbai Mapping Party No.11 (Trans-Harbour Line - South) | Maharashtra, India |
| 22 ژوئن | Missing Maps : Mapathon en ligne - CartONG [fr] |
| 26–28 ژوئن | State of the Map Africa 2025 | Dar es-Salaam, Tanzania |
| 26 ژوئن | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 7 جولای | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 7 جولای | Missing Maps London: (Online) Mapathon [eng] |
| 13 جولای | OpenStreetMap x Wikidata Taipei #90 | Chengnei, Taipei, Taiwan |
| 15 جولای | Online Mapathon von ÄRZTE OHNE GRENZEN |
| 21 جولای | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 21 جولای | OSM-Stammtisch Chemnitz | Chemnitz, Saxony, Germany |
| 21 جولای | 202. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 21 جولای | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 29 جولای | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 4 اوت | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 4 اوت | Missing Maps London: (Online) Mapathon [eng] |
| 10 اوت | OpenStreetMap x Wikidata Taipei #91 | Chengnei, Taipei, Taiwan |
| 18 اوت | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 18 اوت | OSM-Stammtisch Chemnitz | Chemnitz, Saxony, Germany |
| 18 اوت | 203. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 18 اوت | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 26 اوت | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 26 اوت | 79. Wiener OSM-Stammtisch | Vienna, Austria |
| 27 اوت | OpenStreetMap West Bengal Mapping Party + AnkushTheHero Day |
| 28–30 اوت | State of the Map 2026 | Champs-sur-Marne, Ile-de-France, France |
| 28 اوت | Essen OSM-Treffen | Essen, North Rhine-Westphalia, Germany |
| 1 سپتامبر | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 1 سپتامبر | Missing Maps London: (Online) Mapathon [eng] |
| 7 سپتامبر | OpenStreetMap x Wikidata Taipei #92 | Chengnei, Taipei, Taiwan |
| 15 سپتامبر | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 15 سپتامبر | 22. Österreichischer OSM-Stammtisch (online) | Stainach-Pürgg, Styria, Austria |
| 15 سپتامبر | 204. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 15 سپتامبر | OSM-Stammtisch Chemnitz | Chemnitz, Saxony, Germany |
| 15 سپتامبر | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 25 سپتامبر | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 3 اکتبر | Essen OSM-Treffen | Essen, North Rhine-Westphalia, Germany |
| 5 اکتبر | OpenStreetMap x Wikidata Taipei #93 | Chengnei, Taipei, Taiwan |
| 6 اکتبر | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 6 اکتبر | Missing Maps London: (Online) Mapathon [eng] |
| 20 اکتبر | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 20 اکتبر | OSM-Stammtisch Chemnitz | Chemnitz, Saxony, Germany |
| 20 اکتبر | 205. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 20 اکتبر | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 27–29 اکتبر | State of the Map LATAM 2026 | Mexico City, Mexico City, Mexico |
| 27 اکتبر | 80. Wiener OSM-Stammtisch | Vienna, Austria |
| 28 اکتبر | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 3 نوامبر | Missing Maps London: (Online) Mapathon [eng] |
| 7 نوامبر | Maker Days Salzburg | Salzburg, Salzburg, Austria |
| 9 نوامبر | OpenStreetMap x Wikidata Taipei #94 | Chengnei, Taipei, Taiwan |
| 17 نوامبر | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 17 نوامبر | 206. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 17 نوامبر | OSM-Stammtisch Chemnitz | Chemnitz, Saxony, Germany |
| 17 نوامبر | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 25 نوامبر | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
| 1 دسامبر | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 1 دسامبر | Missing Maps London: (Online) Mapathon [eng] |
| 7 دسامبر | OpenStreetMap x Wikidata Taipei #95 | Chengnei, Taipei, Taiwan |
| 9 دسامبر | 23. Österreichischer OSM-Stammtisch (online) | Stainach-Pürgg, Styria, Austria |
| 13 دسامبر | Essen OSM-Treffen | Essen, North Rhine-Westphalia, Germany |
| 15 دسامبر | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 15 دسامبر | OSM-Stammtisch Chemnitz | Chemnitz, Saxony, Germany |
| 15 دسامبر | 207. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 15 دسامبر | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 18 دسامبر | Düsseldorfer OpenStreetMap-Treffen (online) | Dusseldorf, North Rhine-Westphalia, Germany |
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