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 →Slack Agent Builder Challenge
May 20, 2026 - Jul 13, 2026
Prize Pool
$42.0K
H0: Hack the Zero Stack with Vercel v0 and AWS Databases
May 27, 2026 - Jun 29, 2026
Prize Pool
$80.0K
UiPath AgentHack
May 15, 2026 - Jun 29, 2026
Prize Pool
$50.0K
TritonHacks 26
May 16, 2026 - May 17, 2026
Prize Pool
Non-cash Prize
Midnight Hackathon
May 15, 2026 - May 17, 2026
Prize Pool
Non-cash Prize
Kyxgo hack by Aditya Rai & Yash
May 15, 2026 - May 21, 2026
Prize Pool
Non-cash Prize
AI For Good Hackathon
May 16, 2026 - May 22, 2026
Prize Pool
Non-cash Prize
Kane CLI Hack Day
May 29, 2026 - May 30, 2026
Prize Pool
$3.0K
Blockstream Turin Simplicity Hackathon
May 16, 2026 - May 17, 2026
Prize Pool
$3.0K
Build & Pitch w/ Raylu
May 13, 2026 - May 29, 2026
Prize Pool
Non-cash Prize
Byte2Beat
May 14, 2026 - Aug 1, 2026
Prize Pool
$15.0K
Uncommon Hacks 2026
May 16, 2026 - May 17, 2026
Prize Pool
$6.2K
Beyond Tomorrow Summit
May 13, 2026 - Jun 5, 2026
Prize Pool
$2.0K
UAB THE HACK! x Deloitte 2026
May 13, 2026 - May 14, 2026
Prize Pool
€400
BASS X EY Hackathon 2026
May 14, 2026 - May 17, 2026
Prize Pool
Non-cash Prize
AlgoFest Hackathon
May 16, 2026 - May 22, 2026
Prize Pool
$4.3K
Butterbase X ACM-W Build Night
May 14, 2026 - May 15, 2026
Prize Pool
$200
AI Unleashed 2026
May 14, 2026 - May 21, 2026
Prize Pool
$500
JacHacks Spring
May 15, 2026 - May 19, 2026
Prize Pool
$2.8K
AlchemiHack
May 20, 2026 - May 26, 2026
Prize Pool
Non-cash Prize