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 →Splunk AI Hackathon
May 18, 2026 - Jun 15, 2026
Prize Pool
$20.0K
AetherAI Summit Hackathon 2026
Mar 27, 2026 - Apr 11, 2026
Prize Pool
$4.8K
HACK THE WU
Mar 25, 2026 - Mar 29, 2026
Prize Pool
Non-cash Prize
Social Impact BuildFest 2026 - UMD
Mar 27, 2026 - Mar 29, 2026
Prize Pool
Non-cash Prize
CortexX Global Hackathon 2026
Mar 27, 2026 - Apr 18, 2026
Prize Pool
$5.0K
CodePup HackFest
Mar 26, 2026 - Mar 27, 2026
Prize Pool
$1.0K
MLH HACKDAY GREATER NOIDA
Apr 3, 2026 - Apr 4, 2026
Prize Pool
Non-cash Prize
CISSA Design Blitz 2026
Mar 27, 2026 - Mar 28, 2026
Prize Pool
$600
Octoverse Hackathon
Apr 4, 2026 - Apr 5, 2026
Prize Pool
$5.0K
Hack Day in UPJŠ
Mar 25, 2026 - Mar 26, 2026
Prize Pool
Non-cash Prize
JSS Navotthana 2.0
Apr 10, 2026 - Apr 11, 2026
Prize Pool
₹40.0K
HackZard 2.0 Hackathon
May 1, 2026 - May 10, 2026
Prize Pool
$5.0K
SUNHACKS 2K26
Mar 26, 2026 - Apr 5, 2026
Prize Pool
₹82.0K
Innovatera Hackathon
Mar 25, 2026 - Mar 27, 2026
Prize Pool
$17.5K
2026 Spring Claude Builder Hackathon @ TCD
Mar 26, 2026 - Mar 27, 2026
Prize Pool
Non-cash Prize
STEMINATE HACKS 2026
Jun 7, 2026 - Jun 13, 2026
Prize Pool
Non-cash Prize
Hackabury 2026
Jun 1, 2026 - Jun 2, 2026
Prize Pool
Non-cash Prize
NJx Hackathon 2026
Apr 11, 2026 - Apr 12, 2026
Prize Pool
$500
UnitedAI Hackathon
Mar 28, 2026 - Mar 29, 2026
Prize Pool
$1.5K
NTHS Hack 2026: Hack the next frontier
Mar 27, 2026 - Mar 28, 2026
Prize Pool
$1.3K