Online Web3 Hackathons
Participate from anywhere in the world. Browse online Web3 and blockchain hackathons, compete for prizes, and build innovative projects.
View all with full filters →Brain Blitz 2026
Jun 25, 2026 - Jul 8, 2026
Prize Pool
Non-cash Prize
Merrimack FidHacks 2026
Jun 25, 2026 - Jun 26, 2026
Prize Pool
$450
⚡ Build Fast. Launch Loud. ⚡
Jul 24, 2026 - Jul 25, 2026
Prize Pool
$1.0K
IncludAI: The Neurodiversity Hackathon
Jun 24, 2026 - Aug 9, 2026
Prize Pool
$3.0K
Status: EndedTech Genesis '26
Jun 26, 2026 - Jun 27, 2026
Prize Pool
Non-cash Prize
Hackathon New Delhi: Build AI Agents
Jul 17, 2026 - Jul 18, 2026
Prize Pool
Non-cash Prize
Multiagents Hackathon
Jun 25, 2026 - Jun 26, 2026
Prize Pool
$6.5K
AICOO HACKATHON
Jun 27, 2026 - Jun 28, 2026
Prize Pool
$12.2K
Google AI Workshop Hackathon
Jun 24, 2026 - Jun 26, 2026
Prize Pool
Non-cash Prize
NextGen Innovation2026
Jul 11, 2026 - Aug 8, 2026
Prize Pool
Non-cash Prize
Sound for All
Jun 26, 2026 - Jul 31, 2026
Prize Pool
Non-cash Prize
Girls In STEM Global Hackathon
Jun 24, 2026 - Jul 15, 2026
Prize Pool
Non-cash Prize
Internation Hackathon For STEM
Jul 12, 2026 - Jul 20, 2026
Prize Pool
$10.0M
Maverick Hackathon
Jul 31, 2026 - Aug 1, 2026
Prize Pool
$500
Since AI 2026
Nov 6, 2026 - Nov 8, 2026
Prize Pool
€50.0K
Lumora Hacks
Jun 25, 2026 - Jul 1, 2026
Prize Pool
Non-cash Prize
LECATHON 2.0
Jun 23, 2026 - Jul 4, 2026
Prize Pool
$1.0K
Pinch Me! I Want 50K
Jun 23, 2026 - Jul 22, 2026
Prize Pool
$50.0K
Horizon STEM Hackthon
Jul 24, 2026 - Jul 25, 2026
Prize Pool
Non-cash Prize
3DC x Agnes AI
Jun 22, 2026 - Jun 26, 2026
Prize Pool
$700