Open Source Hackathons in Europe 2026 / 2027

Discover 32 upcoming Open Source hackathons, challenges and competitions across Europe. Find events, dates, locations and prizes on Hackathon Hub.

Upcoming events

AI Coding Hackathon September 2026 · 2026-09-04 — 2026-09-06 · Cologne, DE
Eurohack26: High-Performance Computing Applications Programming · 2026-09-07 — 2026-09-11 · Lugano, CH
GDS Local 2026 Hackathon · 2026-09-08 — 2026-09-09 · Sheffield, GB
Joint International Bioinformatics Hackathon - Antwerp · 2026-09-09 — 2026-09-11 · Antwerpen, BE
Hackathon SEANERGYS · 2026-09-14 — 2026-09-18 · Dresden, DE
European Defense Tech Hackathon - Lviv · 2026-09-18 — 2026-09-20 · Lviv, UA
MunichTech EXPO Hackathon – Call for Builders, Innovators & Tech Communities · 2026-09-20 · München, DE
MÜNSTERHACK · 2026-09-25 — 2026-09-26 · Münster, DE
EduHack + AI festival: Code - Present Digital visionaries in the age of AI · 2026-10-01 — 2026-11-05 · Plovdiv, BG
The only AI hackathon that takes you from idea to a global stage · 2026-10-02 — 2026-10-04 · Sofia, BG
Jugend hackt Hamburg · 2026-10-02 — 2026-10-04 · Hamburg, DE
NASA Space Apps Challenge Valencia 2026 · 2026-10-03 — 2026-10-05 · Valencia, ES
HackYeah 2026 · 2026-10-03 — 2026-10-04 · Krakow, PL
MuniHac - The Three-Day Haskell Hackathon with TNG · 2026-10-09 — 2026-10-11 · Unterföhring, DE
JunctionX Lisbon 2026 · 2026-10-10 — 2026-10-11 · Lisbon, PT
Hacking Industry Camp · 2026-10-11 — 2026-10-13 · Strasbourg, FR
Apache Tomcat – Hackathon at Community over Code Glasgow 2026 · 2026-10-11 — 2026-10-14 · Glasgow, GB
AI for Particle Accelerators Hackathon · 2026-10-11 — 2026-10-16 · Les Andelys, FR
Hackathon - October 2026 (Barcelona) · 2026-10-15 — 2026-10-16 · Barcelona, ES
JunctionX Turku 2026 - Hack the Future! · 2026-10-16 — 2026-10-18 · Turku, FI
«Hack Apertus» Liebefeld · 2026-10-18 — 2026-10-19 · Köniz, Bern, CH
EUREKA INTERNATIONAL WARSAW Invention and Innovation Competition · 2026-10-19 — 2026-11-19 · Warsaw, PL
Munich Hackathon 2026 · 2026-10-22 · Munich, DE
BaselHack 2026 · 2026-10-30 — 2026-11-01 · Basel, CH
Music Technology Hackathon — Riga, November 2026 · 2026-11-02 — 2026-11-03 · Riga, LV
BioHackathon Europe 2026 · 2026-11-09 — 2026-11-13 · Barcelona, ES
EUREKA INTERNATIONAL PARIS Invention and Innovation Contest · 2026-11-11 — 2026-11-12 · Paris, FR
LauzHack - EPFL Hackathon · 2026-11-21 — 2026-11-22 · Lausanne, CH
hackaTUM · 2026-11-27 — 2026-11-29 · Munich, DE
ESA’s EarthCODE Hackathon 2026 · 2026-11-30 — 2026-12-04 · Frascati, IT
Hacking Health Camp · 2027-03-20 — 2027-03-22 · Strasbourg, FR
Data Hackdays BE 2027 · 2027-05-21 — 2027-05-22 · Bern, CH

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