| 4 aprill | A Synesthete's Atlas: Cartographic Improvisations between Eric Theise, Jeffrey Gordon Evans, Hannah Joyce, and Steev Hise | Tucson, Arizona, United States |
| 5 aprill | OSM Lucknow Mapping Party No.3 | Lucknow, Uttar Pradesh, India |
| 7 aprill | Mapatón humanitario | Zaragoza, Aragon, Spain |
| 7 aprill | OSM-Treffpunkt | Salzburg, Salzburg, Austria |
| 7 aprill | Shockoe Hill Cemetery mapping with MapRVA | Richmond, Virginia, United States |
| 7 aprill | Easter 2026 Map n Chat | Dublin, Ireland |
| 7 aprill | Missing Maps London: (Online) Mapathon [eng] |
| 8 aprill | iD Community Chat |
| 8 aprill | Essen OSM-Treffen | Essen, North Rhine-Westphalia, Germany |
| 9 aprill | OSM-Vår-pils | Oslo, Norway |
| 9 aprill | A Synesthete's Atlas: Cartographic Improvisations between Eric Theise, Kenneth Cornell, and Clifford Grindstaff | Albuquerque, New Mexico, United States |
| 10 aprill | 214. OSM-Stammtisch Berlin-Brandenburg | Berlin, Germany |
| 10 aprill | 186. OSM-Stammtisch Zürich | Zurich, Zurich, Switzerland |
| 10 aprill | MSF-CARTONG: Nuit de la Géographie | Paris, Ile-de-France, France |
| 11–12 aprill | OSM Hackweekend Berlin-Brandenburg 04/2026 | Berlin, Germany |
| 11 aprill | Braunschweiger Mappertreffen im Stratum 0 Hackerspace | Brunswick, Lower Saxony, Germany |
| 12 aprill | Social Mapping Sunday: Armadale Train Station | Armadale, Western Australia, Australia |
| 12 aprill | Editathon e mapathon alla Milano Marathon 2026 | Milan, Lombardy, Italy |
| 12 aprill | Camera's in kaart brengen | Antwerp, Antwerp, Belgium |
| 12 aprill | OSMmapperCPH | Copenhagen, Capital Region of Denmark, Denmark |
| 12 aprill | OSM Delhi Mapping Party No.28 (Meerut) | Meerut, Uttar Pradesh, India |
| 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 |
| 15 aprill | Une cartopartie dédiée à la mobilité durable dans les Montagnes Béarnaises | Oloron-Sainte-Marie, Nouvelle-Aquitaine, France |
| 15 aprill | Cartopartie à Oloron-Sainte-Marie - Projet SYSTOUR | Oloron-Sainte-Marie, Nouvelle-Aquitaine, France |
| 15 aprill | Rencontre des contributeurs de Vienne (38) | Vienne, Auvergne-Rhône-Alpes, France |
| 15 aprill | Online Mapathon von ÄRZTE OHNE GRENZEN |
| 15 aprill | Stammtisch Karlsruhe | Karlsruhe, Baden-Württemberg, Germany |
| 16 aprill | OSM-Treffen Freiburg/Brsg. | Freiburg im Breisgau, Baden-Württemberg, Germany |
| 18 aprill | Mapping Day ad Empoli | Avane, Empoli, Tuscany, Italy |
| 18 aprill | OSM-TR Meet-Up - OSM League Pit-Stop | Kadıköy, Turkey |
| 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 | London pub meet-up | City of London, England, United Kingdom |
| 21 aprill | 199. OSM-Stammtisch Bonn | Bonn, North Rhine-Westphalia, Germany |
| 21 aprill | East Midlands pub meet-up | Derby, England, United Kingdom |
| 21 aprill | OSM-Stammtisch Chemnitz | Chemnitz, Saxony, Germany |
| 21 aprill | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 23 aprill | Capital One TPM Summit Global Mapathon | Richmond, Virginia, United States |
| 23 aprill | Missing Maps mapathon Bratislava #13 | Bratislava, Region of Bratislava, Slovakia |
| 23 aprill | MapRVA Virtual Map & Yap with LaToya Gray-Sparks, VA DHR | Richmond, Virginia, United States |
| 23 aprill | Modifichiamo Wiki e OSM insieme! | Catania, Sicily, Italy |
| 24 aprill | 18. Mapathon & Mapping Party Rapperswil 2026 | Rapperswil, Rapperswil-Jona, St. Gallen, Switzerland |
| 25 aprill | OSM Mumbai Mapping Party No.9 (Central Line) | Mumbai, Maharashtra, India |
| 27 aprill | Dubnový Missing Maps mapathon na Ústavu botaniky a zoologie | Brno, South Moravian Region, Czechia |
| 27 aprill | Missing Maps : Mapathon en ligne - CartONG [fr] |
| 28 aprill | 78. Wiener OSM-Stammtisch | Vienna, Austria |
| 28 aprill | Kieler Mapper*innentreffen | Kiel, Schleswig-Holstein, Germany |
| 28 aprill | OSM-Verkehrswende #72 | Berlin, Germany |
| 29 aprill | OSM-Stammtisch Hannover | Hanover, Lower Saxony, Germany |
| 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 |
| 2 mai | Mappando si Vinci! - 2 Maggio 2026 | Spicchio-Sovigliana, Vinci, Tuscany, Italy |
| 2 mai | Braunschweiger Mappertreffen im Stratum 0 Hackerspace | Brunswick, Lower Saxony, 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] |
| 6 mai | Stuttgarter OpenStreetMap-Treffen | Stuttgart, Baden-Württemberg, Germany |
| 7 mai | Surveillance mapping with MapRVA | Richmond, Virginia, United States |
| 8 mai | SOSM Association Annual Meeting | Bergdietikon, Aargau, Switzerland |
| 10 mai | OSMmapperCPH | Copenhagen, Capital Region of Denmark, Denmark |
| 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 | OSM-Stammtisch Chemnitz | Chemnitz, Saxony, Germany |
| 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] |
| 6 juuni | Braunschweiger Mappertreffen im Stratum 0 Hackerspace | Brunswick, Lower Saxony, Germany |
| 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 |
| 11–13 juuni | State of the Map US 2026 | Madison, Wisconsin, United States |
| 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 | OSM-Stammtisch Chemnitz | Chemnitz, Saxony, 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 |
| 19 juuni | Missing Maps Mapathon in Stuttgart | Stuttgart, Baden-Württemberg, 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 |
| 15 juuli | Online Mapathon von ÄRZTE OHNE GRENZEN |
| 21 juuli | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 21 juuli | OSM-Stammtisch Chemnitz | Chemnitz, Saxony, Germany |
| 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 |
| 16 august | Kartenwerkstatt Oschatz | Oschatz, Saxony, Germany |
| 18 august | Missing Maps London: (Online) Mid-Month Mapathon [eng] |
| 18 august | OSM-Stammtisch Chemnitz | Chemnitz, Saxony, Germany |
| 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 | OSM-Stammtisch Chemnitz | Chemnitz, Saxony, Germany |
| 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 | OSM-Stammtisch Chemnitz | Chemnitz, Saxony, Germany |
| 20 oktoober | Lüneburger Mappertreffen (online) | Lüneburg, Lower Saxony, Germany |
| 27–29 oktoober | State of the Map LATAM 2026 | 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 | OSM-Stammtisch Chemnitz | Chemnitz, Saxony, 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 | OSM-Stammtisch Chemnitz | Chemnitz, Saxony, 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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