Sustainability Hackathons in Europe 2026 / 2027

Discover 35 upcoming Sustainability hackathons, challenges and competitions across Europe. Find events, dates, locations and prizes on Hackathon Hub.

Upcoming events

Smart Innovation Hackathon 2026 · 2026-09-03 · Halden, Østfold, NO
Hackathon Future Smart City 2026 · 2026-09-09 — 2026-11-05 · Łódź, PL
Energy Data Hackdays · 2026-09-10 — 2026-09-11 · Brugg-Windisch, CH
AI.WOMEN Hackathon 2026 · 2026-09-12 — 2026-09-13 · Hamburg, DE
Hackathon SEANERGYS · 2026-09-14 — 2026-09-18 · Dresden, DE
GirlsWhoML & PhysicsX Hackathon · 2026-09-15 — 2026-09-15 · London, GB
OneAquaHealth IEEE Global Hackathon 2026 · 2026-09-16 — 2026-09-30 · Online
MunichTech EXPO Hackathon – Call for Builders, Innovators & Tech Communities · 2026-09-20 · München, DE
National Hackathon - herHACK · 2026-09-25 · Zurich, CH
“Portathon” · 2026-09-25 — 2026-09-27 · Klaipeda, LT
AI Asset Management Hackathon 2026 · 2026-09-25 — 2026-09-26 · Linz, AT
YFN x EU Hackathon · 2026-09-27 — 2026-09-28 · Munich, Bayern, DE
HackoWatt – an international hackathon on AI for green energy · 2026-09-28 — 2026-09-30 · Katowice, PL
Tech Talent Program: Deep Tech Journey · 2026-09-28 — 2026-12-15 · Berlin, Berlin, DE
EXPECT Hackathon on Advanced Data Processing for Climate Research · 2026-09-29 — 2026-10-01 · Hamburg, DE
Space & Water Hackathon · 2026-10-01 — 2026-10-03 · Noordwijk, NL
Rebuild Green Hackathon 2026: An International Hackathon for the Green Recovery of Ukrainian Communities · 2026-10-03 — 2026-10-24 · Online
NASA Space Apps Challenge Valencia 2026 · 2026-10-03 — 2026-10-05 · Valencia, ES
Quantum x Finance Hackathon · 2026-10-08 — 2026-10-10 · Helsinki, FI
Hackathon Climate U 2026 · 2026-10-10 · Lisbon, PT
EUREKA INTERNATIONAL WARSAW Invention and Innovation Competition · 2026-10-19 — 2026-11-19 · Warsaw, PL
Pitch Your Project · 2026-10-21 — 2026-10-22 · Lindau, DE
Copernicus Marine Service Hackathon 2026 · 2026-10-29 — 2026-10-31 · Amsterdam, NL
STEM Talents for Social Innovation · 2026-10-29 — 2026-10-29 · Milano, IT
International Hackathon Competition for Secondary School Students on the Theme of Smart City Development · 2026-11-03 — 2026-11-05 · Barcelona, ES
Innovation Challenge 2026 · 2026-11-04 · Vienna, AT
Smart City Hackathon Pforzheim · 2026-11-06 — 2026-11-08 · Pforzheim, Baden-Württemberg, DE
Geodata Hackathon 2026 · 2026-11-13 — 2026-11-14 · Frankfurt, DE
GreenBonn Hackathon 2026 · 2026-11-13 — 2026-11-21 · Bonn, DE
SVST Hackathon #6 Verbania · 2026-11-14 — 2026-11-15 · Verbania, IT
#GeneraciónFP, the megahackathon · 2026-11-18 · Malaga, ES
MED Talent Challenge 2026 and MED Tourism Hackathon 2026 · 2026-11-24 — 2026-11-27 · Valletta, Port Region, MT
"Climate ChanCe" - Climate Change Contest 2026 · 2026-11-26 · Venice, IT
ESA’s EarthCODE Hackathon 2026 · 2026-11-30 — 2026-12-04 · Frascati, IT
Data Hackdays BE 2027 · 2027-05-21 — 2027-05-22 · Bern, CH

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