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 →DSH Hacks V1
Mar 2, 2026 - Jun 2, 2026
Prize Pool
Non-cash Prize
Preventing Inaccurate Fills: Liquid Filling System Calibration
Mar 17, 2026 - Mar 18, 2026
Prize Pool
$10.0K
Boeing presents TruHacks 2026
Mar 20, 2026 - Mar 22, 2026
Prize Pool
Non-cash Prize
cybersage
Mar 17, 2026 - Mar 26, 2026
Prize Pool
Non-cash Prize
Jechacks
Jul 10, 2026 - Jul 11, 2026
Prize Pool
$2.2K
IBM x UNSA Hackathon
May 8, 2026 - May 10, 2026
Prize Pool
Non-cash Prize
WiCS x Opportunity Hack: Spring 2026 Hackathon
Mar 28, 2026 - Mar 29, 2026
Prize Pool
$1.0K
Cursor Freeform
Mar 15, 2026 - Mar 16, 2026
Prize Pool
Non-cash Prize
Aurora Global Hackathon
Mar 31, 2026 - Apr 1, 2026
Prize Pool
$3.0K
Abstraction Hackathon 2026
Mar 20, 2026 - Mar 21, 2026
Prize Pool
$2.0K
Blu's Hacks 2026
Mar 28, 2026 - Mar 29, 2026
Prize Pool
Non-cash Prize
HACKHAZARDS '26
Mar 16, 2026 - Apr 4, 2026
Prize Pool
$5.0K
Code Gemini
Mar 16, 2026 - Mar 18, 2026
Prize Pool
Non-cash Prize
Rebuilding the OS: Core System Utilities Hackathon
Apr 17, 2026 - Apr 30, 2026
Prize Pool
Non-cash Prize
Hack o Phobia 2026
Mar 16, 2026 - Mar 18, 2026
Prize Pool
Non-cash Prize
Seattle Divergent Hackathon
Mar 20, 2026 - Mar 21, 2026
Prize Pool
$600
Genovate Hack Days
Mar 16, 2026 - Mar 17, 2026
Prize Pool
Non-cash Prize
CBHS 2026 Hackathon
Apr 6, 2026 - Apr 13, 2026
Prize Pool
$150
Hack for Humanity | Summer 2026
Jul 3, 2026 - Aug 2, 2026
Prize Pool
Non-cash Prize
HooHacks 2026
Mar 21, 2026 - Mar 22, 2026
Prize Pool
$13.2K