Listing Hackathons

EUDIS Defence Hackathon and Mentoring Spring 2026 - FRANCE

Join us for the next edition of ETHWarsaw - where builders meet to create the future of Ethereum.

Push the boundaries of privacy, security, and censorship resistance with cutting-edge technologies.

ETHSamba Hack, Rio de Janeiro, 22/03 - 24/03

The Hackathon for builders by builders. Rome, 17-19 October, Privacy, AI and DeFi tracks.

Munich’s Biggest Ethereum Hackathon Empowering innovation, collaboration, and blockchain solutions at the forefront of technical excellence EVM and EVM-compatible apps. https://ethmunich.de/

Welcome to our 3rd Edition of ETHDam! 48h IRL hackathon, dedicated to Privacy, Security & AI 😎

Welcome to our 2nd Edition of ETHDam, strap in for a 3 day IRL hackathon, dedicated to Privacy and Security, hosted in Amsterdam, the Netherlands.

ETHAccra is an in person 3-day hackathon happening in Accra. “Come for the Hack - Stay for the Vibes”

ETH Latam Hackathon Brasil, Sao Paulo, 06-07/November

ETH Cinco de Mayo Hackathon 2nd Edition

First ever Ethereum hackathon in Central Asia

The third edition of the ETH Belgrade hackathon takes place in Belgrade from June 3-5, 2025.

The second edition of the ETH Belgrade hackathon takes place in Belgrade from May 31st to June 2nd, 2024.

50 seats. £1,000+ in prizes. And we're hiring. 30 seats taken from 100+ applicants. 20 seats remaining. Applications reviewed on a rolling basis. The brief: build AI for retail using behavioural data. Alongside you will be The Shelf. 25 of the most innovative and exciting challenger brands which all 50 builders can eat, drink and vote on. What you get:

Time to Accelerate European Defense Innovation 🚀 Join us and 100+ hackers from all across Europe and beyond for the European Defense Tech Hackathon on March 6-8, 2026, in Rzeszów, Poland. We’re excited to co-organize this hackathon with the Polish Development Fund (PFR) and Rzeszów City to support the creation of innovative technology in Poland, under the patronage of the Minister of National Defence of Poland. PFR offers instruments to support the development of enterprises, local government units, and private individuals, thereby investing in the country's sustainable social development and economic growth. One of PFR's projects is the IDA program, which supports innovative entities in developing dual-use technologies. Goal

$20

Defense Hack Day is an intense one-day event where builders, engineers, and problem-solvers take on real-world security and defense challenges—from counter-drone systems to demining technologies. Think of it as a mini-hackathon: a focused briefing in the morning, a full day of hacking, and a high-energy pitch competition to close it out.

Build blockchain-native tools for biotech's future, inside the world’s most flexible jurisdiction.

🚀 Revolutionize Government Efficiency with xAI & Grok: Embrace the Future of Public Service. ⚡ Build intelligent tools to streamline government processes, cut costs, and drive impactful change. 🤖 Harness the power of Grok, xAI’s advanced AI model, to automate tasks and empower citizens. 🌐 Collaborate with innovative developers and create solutions that reshape public administration. 📅 Register now and be part of the movement for a leaner, smarter government!

Join the world’s first Custom GPTs Hackathon to create your own AI tools! Innovate with GPTs: Explore the possibilities of creating custom versions of ChatGPT for specific tasks or purposes. No Coding Required: Anyone can build their own GPT; coding skills are not necessary. Hands-on Experience: The primary benefit of this Hackathon is the opportunity to gain practical, hands-on experience with OpenAI's GPT technology. Educational Focus: Use this event as an educational journey to understand the capabilities and applications of GPTs.

Be a founder for a day. This is a one-day hackathon for software founders, and for anyone who wants to find out if they are one. You start at 10:00 with an idea and finish at 17:30 with a product, real customer conversations, a live landing page and an investor pitch. What you hand in: - A working product - What you learned during the validation process

Social Media Hackathon — Stuttgart One day. 60 builders. Ship something the social web hasn't seen yet. Spend a Saturday in July building the next generation of social media tools — from AI-powered content engines to community platforms that don't exist yet. Form a team in the morning, ship a working demo by the evening. 📋 At a glance What: One-day social media hackathon

A short hackathon and meetup for Cursor community in Germany. More info coming soon!

build cool sh*t with Cursor or any AI of your choice for 2 days (31st of January to 1st of February 2026). just bring your laptop and become part of the biggest AI hackathon in Germany's history (400+ participants). open for everyone. you don’t need to be technical to participate! just need to ship the thing. free. food, drinks, free credits to build and prizes are on us. just show up ready to build. why join win big prizes (cash & credits)

Build next-gen tech adopted by Network States that empower digitally-native communities to thrive

Europe’s critical infrastructure is increasingly exposed — from energy grids and transport hubs to data centers and communication networks. The threat landscape has changed: low-cost drones, hybrid cyberattacks, and denied-communication environments. From May 8-10, 2026, the first Critical Infrastructure Shield Hackathon in Switzerland brings together Europe’s top engineers, operators, founders, and industry leaders to build the systems that protect the backbone of modern society. Prototype real-world solutions designed to operate in contested environments — from counter-drone systems to resilient communications and autonomous defense. Visitors If you’re curious about the outcomes and what the teams have built, you can join the Demo Day on Sunday as an EDTH Community visitor by selecting a Community Visitor ticket.