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 →Build-A-Thon
Oct 16, 2026 - Oct 17, 2026
Prize Pool
Non-cash Prize
Kifiya Inspire Hackathon 2026 R2
Jul 23, 2026 - Jul 24, 2026
Prize Pool
$623
Global Tech Innovation Challenge
Jul 17, 2026 - Jul 24, 2026
Prize Pool
Non-cash Prize
DS6051 Decoding LLMs Hackathon
Jul 7, 2026 - Jul 8, 2026
Prize Pool
Non-cash Prize
Code API
Jun 27, 2026 - Jul 14, 2026
Prize Pool
Non-cash Prize
Prometheus July AI Challenge
Jul 17, 2026 - Jul 30, 2026
Prize Pool
$400
Rampamble
Jul 22, 2026 - Aug 20, 2026
Prize Pool
$50.0K
IncludAI - The Neurodiversity Hackathon
Aug 1, 2026 - Aug 9, 2026
Prize Pool
$3.0K
Dummy
Jul 7, 2026 - Jul 8, 2026
Prize Pool
₹20
The Great India Quiz Challenge 2026
Jun 26, 2026 - Jul 8, 2026
Prize Pool
₹322.5K
LUMA Hackathon (August 30th - September 7th)
Jun 26, 2026 - Sep 7, 2026
Prize Pool
Non-cash Prize
LUMA Hackathon (September 20th - 28th)
Jun 26, 2026 - Sep 28, 2026
Prize Pool
Non-cash Prize
LUMA Hackathon (October 11th - 18th)
Jun 26, 2026 - Oct 18, 2026
Prize Pool
Non-cash Prize
Kiro Buildfest 2026 Singapore
Jun 26, 2026 - Jul 4, 2026
Prize Pool
Non-cash Prize
Dev Connect
Jun 26, 2026 - Jul 13, 2026
Prize Pool
Non-cash Prize
Hack Days in Hosur
Jun 18, 2026 - Jul 2, 2026
Prize Pool
Non-cash Prize
Codex Community Meetup - Dhaka
Jun 25, 2026 - Jun 26, 2026
Prize Pool
Non-cash Prize
Hack Day Jabalpur 2026
Jun 25, 2026 - Jun 26, 2026
Prize Pool
Non-cash Prize
HTCJ Aviation Futures Innovation Challenge
Jun 25, 2026 - Jul 21, 2026
Prize Pool
Non-cash Prize
STEMist Hacks IV
Jul 30, 2026 - Aug 2, 2026
Prize Pool
Non-cash Prize