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 →McGill Data Network Hackathon 2026
Apr 1, 2026 - Apr 2, 2026
Prize Pool
$300
HackDartmouth XI
Apr 11, 2026 - Apr 12, 2026
Prize Pool
Non-cash Prize
NACOS X GDG AI Hackathon
Apr 1, 2026 - Apr 25, 2026
Prize Pool
Non-cash Prize
Build4SC
Apr 3, 2026 - Apr 4, 2026
Prize Pool
$175
Rutgers MTC Code for Impact Hackathon
Apr 3, 2026 - Apr 4, 2026
Prize Pool
$10
Y-Claude Builder Club Hackathon
Apr 3, 2026 - Apr 4, 2026
Prize Pool
$300
HackNSU Season 6
Apr 2, 2026 - Apr 25, 2026
Prize Pool
$406
Social Impact BuildFest 2026 - CU Boulder
Apr 10, 2026 - Apr 12, 2026
Prize Pool
Non-cash Prize
FIND EVIL!
Apr 15, 2026 - Jun 15, 2026
Prize Pool
$22.0K
Status: EndedFour.Meme AI Sprint
Apr 1, 2026 - Apr 30, 2026
Prize Pool
$50.0K
Spiti-AI Hackathon
Apr 12, 2026 - Apr 14, 2026
Prize Pool
₹200.0K
Youth Code x AI
Jun 20, 2026 - Jun 27, 2026
Prize Pool
$1.2K
HACK GGC VI
Apr 3, 2026 - Apr 4, 2026
Prize Pool
Non-cash Prize
SheBuilds
Apr 23, 2026 - Apr 24, 2026
Prize Pool
₹20.0K
Southwest MN Hacks
Sep 12, 2026 - Sep 13, 2026
Prize Pool
Non-cash Prize
Learning Hackathon: Spec Driven Development
Mar 31, 2026 - Apr 29, 2026
Prize Pool
Non-cash Prize
AI for Everyone
Mar 31, 2026 - Apr 30, 2026
Prize Pool
$8.0K
The Future Innovators Hackathon: A Road to START Hack
Mar 31, 2026 - Apr 25, 2026
Prize Pool
€2.0K
Flood Safety
Apr 1, 2026 - Apr 14, 2026
Prize Pool
Non-cash Prize
LynxHack2026
Mar 31, 2026 - Apr 3, 2026
Prize Pool
Non-cash Prize