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 →UChicago KTP Hackdays 2026
Feb 27, 2026 - Feb 28, 2026
Prize Pool
Non-cash Prize
MMUST HACKDAY
Mar 13, 2026 - Mar 14, 2026
Prize Pool
Non-cash Prize
Autonomous Agents Hackathon
Feb 26, 2026 - Feb 27, 2026
Prize Pool
$7.8K
Hack Days JNGEC
Mar 2, 2026 - Mar 3, 2026
Prize Pool
Non-cash Prize
HudHack2026
Feb 25, 2026 - Feb 26, 2026
Prize Pool
Non-cash Prize
AfroPix 2026
Feb 27, 2026 - Feb 28, 2026
Prize Pool
Non-cash Prize
Hack For The World 2026
Feb 27, 2026 - Feb 28, 2026
Prize Pool
Non-cash Prize
UVMHacks
Feb 27, 2026 - Feb 28, 2026
Prize Pool
Non-cash Prize
Build With Gemini
Mar 10, 2026 - Mar 11, 2026
Prize Pool
Non-cash Prize
HackGreenwich
Feb 28, 2026 - Mar 1, 2026
Prize Pool
Non-cash Prize
Robotic Agents Hackathon
Mar 12, 2026 - Mar 13, 2026
Prize Pool
Non-cash Prize
ListenHacks
Feb 27, 2026 - Feb 28, 2026
Prize Pool
Non-cash Prize
Philly Codefest High School Edition 2026
Feb 27, 2026 - Feb 28, 2026
Prize Pool
Non-cash Prize
SVC Hackathon: Environmental Conservation
May 1, 2026 - May 2, 2026
Prize Pool
Non-cash Prize
evensonarisnord
Dec 30, 2026 - Dec 31, 2026
Prize Pool
$150
BISV Hacks 2026
Mar 7, 2026 - Mar 8, 2026
Prize Pool
$490
ViTAL Hacks 2026
Mar 20, 2026 - Mar 21, 2026
Prize Pool
Non-cash Prize
HackNova 3.0
Mar 19, 2026 - Mar 20, 2026
Prize Pool
₹32.0K
The Galactic Archives
Feb 26, 2026 - Feb 27, 2026
Prize Pool
Non-cash Prize
Open Agents Hackathon
Feb 24, 2026 - Feb 25, 2026
Prize Pool
Non-cash Prize