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 →Backblaze Generative Media Hackathon: Build with Genblaze on B2
Jun 22, 2026 - Aug 3, 2026
Prize Pool
$10.0K
DSH Pitch
Jun 24, 2026 - Aug 30, 2026
Prize Pool
$100
Prompt2Product: MLH Hack Day @ AITR
Oct 8, 2026 - Oct 9, 2026
Prize Pool
Non-cash Prize
IGAD Hackathon 2026: Smarter Early Warning, Stronger Communities
Jun 22, 2026 - Jul 31, 2026
Prize Pool
$10.0K
Reverie Hacks 2026
Aug 2, 2026 - Aug 17, 2026
Prize Pool
Non-cash Prize
Hack Atlantic
Sep 26, 2026 - Sep 27, 2026
Prize Pool
$6.0K
3D Websites Hackathon
Jun 22, 2026 - Jul 31, 2026
Prize Pool
$55
BloomKnights
Jul 10, 2026 - Jul 11, 2026
Prize Pool
Non-cash Prize
DIVE 2026
Jul 25, 2026 - Jul 26, 2026
Prize Pool
$2.9K
Kent Hack Enough 2027
Mar 6, 2027 - Mar 7, 2027
Prize Pool
Non-cash Prize
Cyber Sages Hackathon
Jul 5, 2026 - Jul 6, 2026
Prize Pool
Non-cash Prize
STEM Energy Hackathon
Aug 9, 2026 - Aug 10, 2026
Prize Pool
$100.0K
Hackdays Prayagraj
Jul 2, 2026 - Jul 3, 2026
Prize Pool
Non-cash Prize
hack::peel 2026
Dec 12, 2026 - Dec 13, 2026
Prize Pool
$100
HackCamp 2026
Nov 7, 2026 - Nov 8, 2026
Prize Pool
Non-cash Prize
8-Bit Jam
Aug 8, 2026 - Aug 9, 2026
Prize Pool
$1.4K
Stupid Ideas Hackathon (Ottawa F26)
Sep 11, 2026 - Sep 12, 2026
Prize Pool
$517
BuunieX Hackathon
Jun 22, 2026 - Jul 22, 2026
Prize Pool
Non-cash Prize
Healthcare x AI Hackathon | HAIG Media
Jun 26, 2026 - Jun 27, 2026
Prize Pool
$1.5K
SC Quantathon v3
Sep 26, 2026 - Sep 27, 2026
Prize Pool
Non-cash Prize